2 Dec 2011
PLL Chip Set for Ultimate Spurious & Phase Noise Performance!
48-bit Delta-Sigma Modulator, Built-in Frequency Sweeper
Hittite announces the release of a new market leading PLL chip set. The HMC983LP5E DC to 7 GHz Fractional-N Divider and Frequency Sweeper and the HMC984LP4E Digital Phase-Frequency Detector and Charge Pump form a high performance PLL chip set solution targeted at PLL and Frequency Modulated Continuous Wave (FMCW) sweeper applications requiring ultimate performance.
The HMC983LP5E integrates the industry's largest programmable 48-bit Delta-Sigma Modulator which allows the combined PLL to achieve unparalleled fractional frequency resolution of 180 nHz. A built-in frequency sweeper enables the combined PLL to generate identical, coherent, FMCW frequency sweeps that can be linear, user-defined, automatic or triggered.
The HMC984LP4E provides an ultra low noise phase detector and charge pump capable of operating at high phase detector frequencies of 125 MHz in fractional mode, and 175 MHz in integer mode. This capability enables the PLL chip set to utilize wider loop bandwidths which result in better phase noise performance, faster PLL locking times, and faster frequency sweeps. The PLL chip set phase noise Figure of Merit performance is -231 dBc/Hz in integer mode and -227 dBc/Hz in fractional mode.
Although the HMC983LP5E and the HMC984LP4E can be used separately in stand-alone applications, partitioning the PLL building blocks into two distinct devices achieves superb isolation and results in market leading spurious emissions performance exceeding -60 dBc/Hz inside the loop bandwidth. Both the HMC983LP5E and the HMC984LP4E are housed in plastic leadless surface mount packages and provide excellent temperature stability over the -40 °C to 85 °C operating range.
29 Nov 2011
MMIC Band Pass Filter Chip Tunes from 19 to 38 GHz
New Tunable MMIC Filter Occupies only 3 mm²
Hittite has introduced a new Tunable MMIC Band Pass Filter which is ideal for hybrid and microwave integrated circuit (MIC) applications in wideband test and measurement equipment, communication systems and electronic warfare (EW) subsystems to 38 GHz. This analog voltage tuned, solid state MMIC filter is insensitive to environmental conditions, and represents a space saving alternative to mechanically tuned and MEMS based filter solutions.
The HMC899 Tunable MMIC Band Pass Filter (BPF) features a user selectable pass band frequency range of 19 and 38 GHz. The 3 dB filter bandwidth is approximately 18%, while the 20 dB bandwidth is approximately 35%. The pass band center frequency of the HMC899 is controlled by an analog tune voltage between 0 and 14V with a tuning speed of 200 ns. The HMC899 exhibits excellent microphonic immunity due to the monolithic design, and provides a dynamically adjustable filtering solution in advanced communications applications.
Compared to physically large switched filter banks and cavity tuned filters the HMC899 can reduce the required filtering circuit area by up to 90 %. Return losses for the HMC899 are typically 10 dB, while residual phase noise is as low as -157 dBc/Hz at 1 MHz offset. For applications which a require a surface mount compatible solution, this same filter is available in a RoHS compliant 4 x 4 mm QFN SMT package as the HMC899LP4E.
11 Nov 2011
DC to 8 GHz Ultra Low Noise 1:9 Fanout Buffer!
Passive GaAs MESFET MMIC Mixer Isolates All Three Ports
Hittite announces the release of HMC987LP5E, a high performance 1:9 Fanout Buffer which is ideal for low noise clock distribution in cellular infrastructure, SONET, Fibre Channel, Gigabit Ethernet and ADC/DAC applications.
The HMC987LP5E features industry leading jitter performance of 0.6 attoseconds/vHz or 50 fs over its entire DC to 8 GHz operating frequency range. Its flexible I/O interface supports AC or DC coupling, LVPECL, LVDS, CML, and is CMOS compatible. Completely configurable, the HMC987LP5E features 8 differential or 16 single-ended LVPECL outputs, and one CML output with adjustable swing/power level in 3 dB steps. Integrated parallel or serial control allows users to enable or disable individual HMC987LP5E outputs to reduce power consumption when not needed. The HMC987LP5E is housed in plastic leadless surface mount package and provides excellent temperature stability over the -40°C to 85°C temperature range.
Also released is the HMC745LC3 , which replaces the HMC745LC3 XOR/XNOR gate function. The HMC745LC3 is available in a ceramic RoHS compliant 3 x 3 mm SMT package and serves as an alternate to Inphi's 13611XR, while supporting data transmission rates up to 13 Gbps, and clock rates up to 13 GHz. The differential CML inputs to the HMC745LC3 are terminated with 50 Ohms to the positive supply and bypassed on-chip to a transmission line return signal at ground, and may be either AC or DC coupled. The differential outputs may be either AC or DC coupled. Propagation delay is typically 95 ps, while rise and fall times are 21 and 19 ps respectively. The HMC745LC3 provides 2 ps of deterministic jitter and dissipates only 240 mW.
9 Nov 2011
New Triple Balanced Mixer Serves Millimeterwave Transceivers!
Passive GaAs MESFET MMIC Mixer Isolates All Three Ports
Hittite announces the release of a new Triple Balanced GaAs MESFET MMIC Mixer die which is ideal for microwave & millimeterwave radios, military sensors, and test & measurement equipment applications from 26 to 32 GHz.
The HMC1015 is a Triple Balanced GaAs MESFET MMIC Mixer die which accepts IF frequencies from 16 to 22 GHz, and RF frequencies from 26 to 32 GHz. This highly integrated mixer employs a passive architecture which requires no DC bias and no external components or matching circuitry. The HMC1015 operates with LO drive levels as low as +9 dBm, and is ideally suited as the frequency converter core in both upconversion and downconversion applications. This unique mixer die exhibits consistent conversion gain and compression characteristics across its operating bandwidth, while on-chip balun structures provide excellent LO to RF, LO to IF and 2LO to IF isolations of greater than 30 dB.
The HMC1015 is offered in bare die form and features RF I/Os which are internally matched to 50 Ohms, allowing for simplified integration into higher level modules and subsystems. The HMC1015 complements Hittite's broad line of single, double and subharmonic mixers with frequency coverage up to 90 GHz.
1 Nov 2011 Time Delay/Phase Shifter Delivers 500° over 8-23 GHz!
Ideal for Fiber Optic Clock & LO Synchronization Applications
Hittite announces the release of the HMC877LC3 8 to 23 GHz Time Delay/Phase Shifter. The HMC877LC3 is ideal for clock chain and skew adjustment in 10G-RZ, 40G/100G RZ-DQPSK fiber optic applications.
The HMC877LC3 is the first Time Delay/Phase Shifter product in the market to provide up to 1.4 UI (500°) continuously adjustable delay over a wide 8 to 23 GHz frequency range, while maintaining a constant differential output voltage. The device accepts either single-ended or differential input signals, while providing a 500 to 900 mVp-p programmable differential output swing.
The HMC877LC3 provides a time delay/phase shift which is linearly monotonic with respect to the differential delay control voltage, over a ±0.6V tuning range. On chip compensation circuitry ensures an extremely stable programmable time delay over both frequency and temperature. A high delay control modulation bandwidth (3 dB rolloff point) of 2.5 GHz combined with single +3.3V operation also make the HMC877LC3 ideal for phase modulation in military & space, test & measurement and broadband applications.
The HMC877LC3 complements many of Hittite's previously released limiting amplifiers, modulator drivers and high speed logic products to provide a complete solution set for fiber optic and test equipment applications. The HMC877LC3 is housed in a ceramic 3 x 3 mm SMT package (RoHS compliant), and is fully specified for operation from -40 °C to +85 °C.
28 Oct 2011
Ceramic Packaged GaAs MMIC SPDT Switch Spans DC to 28 GHz!
Non-Reflective Switch Offers High Isolation and Low Insertion Loss
Hittite announces the release of a new ceramic packaged, GaAs pHEMT MMIC Single Pole Double Throw (SPDT) Switch which is ideal for microwave radio, wideband telecom, electronic warfare (EW), industrial sensors, and test equipment applications from DC to 28 GHz.
The HMC547LC3 is a wideband, high isolation GaAs pHEMT MMIC SPDT switch which provides 40 dB isolation and less than 2 dB insertion loss at midband. The HMC547LC3 is controlled by two complementary logic inputs of -5/0V, and requires no DC bias supply. High input IP3 of +46 dBm and fast switching speed of 6 ns allow this switch to be used in numerous locations in advanced military and millimeterwave transceivers and subsystems.
The HMC547LC3 DC to 28 GHz SPDT Switch MMIC is housed in a ceramic 3 x 3 mm leadless surface mount package, and complements Hittite's broad line of single, double and multi-throw switches with frequency coverage to 86 GHz. For applications which require slightly less operating bandwidth, this same SPDT MMIC switch is also available in a 3 x 3 mm plastic QFN leadless package as the HMC547LP3E, and operates from DC to 20 GHz.
19 Oct 2011
Programmable DCR Solution for Multi-Carrier, Multi-Standard Radios!
Excellent Linearity, Low Noise Figure & Full Programmability
Hittite announces the release of the HMC6383 , a high-performance, flexible, Direct Conversion Receiver (DCR) radio design platform that can be configured on-the-fly. Fully field programmable, the HMC6383 platform is designed to serve as a receiver subsystem building block for various applications including cellular basestations, microwave radio, adaptive IF strips, wireless LAN, software defined radio and test equipment.
Utilizing a robust direct conversion receiver architecture, the HMC6383 features precisely programmable 3 dB bandwidth from 3.5 MHz to 50 MHz baseband (7 MHz to 100 MHz RF) within ±2.5% bandwidth accuracy. This unique radio design platform also provides wideband input frequency coverage from 700 MHz to 3000 MHz with 90 dB of distributed programmable gain, and high linearity in excess of 60 dBm input IP2. The integrated, seamless, image rejection calibration algorithm achieves 80 dB of image rejection.
The HMC6383 enables users to offer identical hardware receiver platforms across various standards, jurisdictions, and bands of operation, while pre-programming or field programming the receiver to suit each individual deployment. This capability significantly reduces the cost and complexity of manufacturing, deploying, and supporting standard and region-specific equipment. The HMC6383 evaluation development kit includes a full software suite for complete configuration and control. This enables system designers to observe and understand the effects and implications of any parameter on their overall system design performance. Market leading performance, combined with a robust fully configurable design, makes the HMC6383 evaluation platform a logical starting point in designing a modular, highly-configurable, multi-standard, multi-carrier receiver.
10 Oct 2011 New Mux & Demux for Broadband Test, ATE, FPGA & DAC Interfacing!
Support Data Serialization & Deserialization up to 32 Gbps
Hittite has extended the Mux & Demux product line with the introduction of 32 Gbps Multiplexer & Demultiplexer products. The HMC954LC4B 2:1 Multiplexer, and the HMC955LC4B 1:2 Demultiplexer support up to 32 Gbps data serialization and deserialization respectively, and are data rate and protocol agnostic. These devices are ideal for broadband test & measurement, ATE and high speed DAC and FPGA interfacing applications.
The HMC954LC4B is a 32 Gbps 2:1 Multiplexer which time interleaves two differential input data lanes up to 16 Gbps, into a single output data lane up to 32 Gbps. The mux latches the two differential inputs on a rising edge of the input clock and the device uses both rising and falling edges of the half-rate clock to serialize the data. The HMC955LC4B is a 1:2 Demultiplexer which is designed to deserialize a single input data lane up to 32 Gbps into two separate output data lanes up to 16 Gbps each. The device uses both the rising and falling edges of the half-rate input clock, typically 16 GHz, to sample the input data in sequence, and latches the data onto the differential outputs. The HMC955LC4B also features a high speed clock synchronous invert input that allows for data scrambling.
Both the HMC954LC4B and the HMC955LC4B are capable of operating from either a negative or positive 3.3V supply while exhibiting only 0.2 ps RMS jitter and 3 ps p-p of deterministic jitter. These specifications, combined with low typical power dissipation of 500 mW and low skew between outputs, make them ideal for data aggregation and data source selection in military and communications systems. Fast rise and fall times of 19 ps, programmable output voltage swing capability and DC coupling enables simple interfacing with FPGA devices in ATE applications.
The HMC954LC4B and the HMC955LC4B complement many of Hittite's previously released Fiber Optic and High Speed Logic products, are housed in ceramic 4 x 4 mm SMT packages (RoHS compliant), and are fully specified for operation from -40 °C to +85 °C.
4 Oct 2011
New MMIC Divide-by-3 Sets Bandwidth Benchmark
Low Noise MMIC Performs Divide-by-1 and Divide-by-3 Functionality to 13 GHz
Hittite announces the release of a new low noise programmable frequency divider which is ideal for use in signal generation architectures found in test equipment, laboratory systems and various military applications.
The HMC861LP3E is a Low Noise Programmable Frequency Divider which can be programmed to divide-by-1 or divide-by-3, and accepts input frequencies from 100 MHz to 13 GHz. The HMC861LP3E exhibits extremely low additive phase noise of -152 dBc/Hz in divide-by-1 mode, and -153 dBc/Hz in divide-by-3 mode. This versatile frequency divider accepts input signal levels from -10 to +10 dBm, while delivering +2 dBm of output power. The wide input frequency and power level ranges, and the low single sideband phase noise make the HMC861LP3E ideal for synthesizer and phase locked loop applications in wideband and high data rate communication systems.
The division ratio of the HMC861LP3E is selected by a single CMOS compatible input and the device is powered from a +5V supply. The HMC861LP3E is the only known MMIC divide-by-3 available in the marketplace which operates to 13 GHz.
The HMC861LP3E is conveniently housed in a miniature 3x3 mm RoHS compliant QFN leadless SMT package and is specified for operation over -40 °C to +85 °C.
30 Sep 2011
New Wideband Driver Amplifier Spans DC to 48 GHz!
GaAs pHEMT MMIC Distributed Amplifier Delivers 0.25 Watts Output Power
Hittite announces the release of a new Wideband GaAs pHEMT MMIC Distributed Power Amplifier die which is ideal for military EW, test & measurement equipment, and broadband telecom equipment applications up to 48 GHz.
The HMC1022 is a 0.25 Watt GaAs pHEMT MMIC Distributed Power Amplifier which operates between DC and 48 GHz. The amplifier provides 12 dB of gain, +32 dBm output IP3 and +22 dBm of output power at 1 dB gain compression while consuming only 150 mA from a +10 V supply. The HMC1022 exhibits a slightly positive gain slope from 10 to 35 GHz, making it ideal for EW, ECM, Radar and test equipment applications.
The HMC1022 is offered in bare die form and features RF I/Os which are internally matched to 50 Ohms. Requiring only a few external bias decoupling components, the HMC1022 Wideband Distributed Amplifier was developed for simplified integration into Multi-Chip-Modules (MCMs) and other higher level assemblies and subsystems. The HMC1022 complements Hittite's broad line of distributed low noise, driver, and power amplifiers, with frequency coverage up to 65 GHz.
20 Sep 2011 Octal ADCs Enable Significant Power Savings in Medical Ultrasound Systems!
72.2 dB SNR @ 50 MSPS with 8 MHz Input Frequency & 14-Bit Output
Hittite is featuring a new set of octal 12-bit Analog-to-Digital Converters, the HMCAD1102, HMCAD1101 and HMCAD1100 which complements Hittite's ultra low power ADC products.
Tailored to meet the strong demand for power reduction in high performance medical ultrasound applications, the HMCAD1102, HMCAD1101 and HMCAD1100 family are Octal 12 & 13-Bit ADCs which operate from 20 to 80 MSPS. Both 12-bit and 14-bit LVDS output modes are available and can be selected through the SPI control interface. Noise performance (SNR) at 50 MSPS with 8 MHz input frequency and 14-bit output is typically 72.2 dB and 71 dB is worst case. Pin compatible with the ADS527x and ADS528x families from Texas Instruments, power dissipation at 50 MSPS is 40 mW per channel, including LVDS outputs.
The HMCAD1102, HMCAD1101 and HMCAD1100 family has a power down mode dissipating less than 10 µW and an unprecedented wake-up time of 18 µs. In addition, there is a sleep mode with 0.5 µs wake-up time, and power dissipation in sleep mode is only 3 mW per channel. These idle modes allow the user to further reduce the average power dissipation by switching the converter off during idle periods. The average power dissipation can be reduced by as much as 75%, creating tremendous impact in systems where power dissipation is critical. The superior noise performance, low power operating modes and flexibility of the HMCAD110x family have begun to resonate with customers; consequently these devices are being adopted by several global medical ultrasound manufacturers.
All three ADCs can be evaluated with the Hittite EasySuite evaluation kits, EKIT01-HMCAD1102, EKIT01-HMCAD1101 and EKIT01-HMCAD1100.The evaluation kits are based on Xilinx® FMC (FPGA Mezzanine Card) SP601 standard motherboards, and feature Hittite evaluation boards with on-board ADCs connected to the Xilinx® board through an FMC connector. Hittite's pre-loaded EasyStack firmware performs FPGA processing, while the EasySuite PC software tool performs ADC configuration, data capture and performance analysis.
The HMCAD1102, HMCAD1101 and HMCAD1100 ADCs are housed in a 9 x 9 mm plastic leadless surface mount package and provide excellent temperature stability over the -40 °C to +85 °C temperature range.
8 Sep 2011
Widest Bandwidth SMT Digital Attenuators Operate to 33 GHz
New 5-Bit MMIC Attenuators Offer The Widest Bandwidth in the Industry!
Hittite has introduced two new SMT packaged MMIC 5-Bit Digital Attenuators which are ideal for automotive, microwave radio, test equipment, military and space applications up to 33 GHz.
The HMC939LP4E is a wideband SMT GaAs MMIC 5-Bit Digital Attenuator which is rated from 0.1 to 33 GHz. This wideband attenuator product exhibits insertion loss as low as 4 dB, and can be programmed to provide up to 31 dB attenuation in 1.0 dB steps. The HMC941LP4E is a wideband SMT GaAs MMIC 5-Bit Digital Attenuator which is rated from 0.1 to 33 GHz. This wideband attenuator product exhibits insertion loss as low as 4 dB, and can be programmed to provide up to 15.5 dB attenuation in 0.5 dB steps.
The HMC939LP4E and HMC941LP4E feature excellent attenuation accuracy of ± 0.3 dB and fast switching speed of 90 ns, and both accept positive control voltages of 0/+3V or 0/+5V. The HMC939LP4E and HMC941LP4E also exhibit high input IP3 performance of up to +45 dBm, allowing them to be used in various locations within a microwave or millimeterwave transceiver. The HMC939LP4E and the HMC941LP4E are housed in RoHS compliant, 4 x 4 mm QFN packages.
The HMC939LP4E and HMC941LP4E are also offered in bare die form as the HMC939 and the HMC941. The HMC939LP4E and HMC941LP4E complement Hittite's extensive line of control components, including the widest selection of MMIC digital attenuators available from any OEM.
7 Sep 2011 New Industry Leading Wideband PLL with Integrated VCO!
Low Phase Noise & Low Spurious Characteristics are Ideal for Software Defined Radios
Hittite has introduced the HMC829LP6GE , an industry leading, low noise, wide band, Fractional-N Phase-Locked-Loop (PLL) that features an integrated Voltage Controlled Oscillator (VCO) with a fundamental frequency of 2800 MHz to 4200 MHz, and an integrated VCO output divider (divide by 1/2/4/6.../60/62). These features allow the HMC829LP6GE to generate frequencies from 45 MHz to 1050 MHz, 1400 MHz to 2100 MHz, and 2800 MHz to 4200 MHz. The HMC829LP6GE is ideal for very high data rate radios, DDS replacement, phased array applications, CATV equipment and cellular/4G/WiMax infrastructure applications.
The HMC829LP6GE also features an integrated phase detector and delta-sigma modulator which are capable of operating at up to 100 MHz to permit wider loop-bandwidths with excellent spectral performance. The device features industry leading phase noise and spurious performance across all frequencies to minimize blocker effects and simultaneously improve receiver sensitivity and transmitter spectral purity. The HMC829LP6GE features a superior noise floor of less than -170 dBc/Hz, which makes it ideal as a local oscillator source for RF mixers, as a clock source for high-frequency data converters, or as a tunable reference source for ultra-low spurious applications requiring spurs less than -100 dBc/Hz.
Additional features of the HMC829LP6GE include RF output power control from 0 to 6 dB (2 dB steps), an output mute function, and a delta-sigma modulator Exact Frequency Mode which enables users to generate output frequencies with 0 Hz frequency error.
The HMC829LP6GE is housed in a 6 x 6 mm plastic leadless surface mount package and provides excellent temperature stability over the -40 °C to +85 °C temperature range.
31 Aug 2011
Two New High Linearity VGAs are Ideal for Microwave Radio!
Variable Gain Amplifiers Cover Point to Point Bands from 5 to 27 GHz
Hittite announces the release of two new SMT packaged GaAs MMIC variable gain amplifiers (VGAs) which are ideal for VSAT, microwave radio, military, and test & measurement equipment applications from 5 to 27 GHz.
The HMC996LP4E and the HMC997LC4 are GaAs PHEMT MMIC analog variable gain amplifiers which operate from 5 to 12 GHz and from 17 to 27 GHz respectively. Across the line, these versatile amplifiers delivers up to 20.5 dB of gain, +24 dBm, of output P1dB, and +34 dBm of output IP3 in their maximum gain state. Each of these amplifiers is controlled by a single analog control voltage between 0 and -4.5V, and provides up to 22 dB of gain control range. The high linearity performance of the HMC996LP4E and the HMC997LC4 allows them to be used as either buffer amplifiers, or as power amplifier pre-drivers in microwave transmitter applications.
The HMC996LP4E consumes 120 mA from a +5V supply, and is housed in a RoHS compliant 4 x 4 mm QFN leadless package. The HMC997LC4 consumes only 170 mA from a +5V supply, is housed in a RoHS compliant 4 x 4 mm ceramic QFN leadless package. The HMC996LP4E and the HMC997LC4 are compatible with high volume surface mount manufacturing, and both feature excellent gain flatness making them well suited for military EW, ECM and radar applications.
15 Aug 2011 Three Watt Power Amplifier is Ideal for VSAT and Microwave Radio
PA with Integrated Power Detector Covers 12 - 16 GHz
Hittite announces the release of a new SMT Packaged, 3 Watt GaAs pHEMT MMIC Power Amplifier which is ideal for VSAT, microwave radio, military, and test & measurement equipment applications from 12 to 16 GHz.
The HMC995LP5GE is a four stage GaAs pHEMT MMIC 3 Watt Power Amplifier with an integrated temperature compensated on-chip power detector which operates between 12 and 16 GHz. The HMC995LP5GE provides 27 dB of gain, +35.5 dBm of saturated output power, and 24 % PAE (power added efficiency) while operating from a +7V supply. The HMC995LP5GE exhibits excellent linearity and is optimized for high capacity digital microwave radio. This powerful amplifier is also ideal for 13.75 to 14.5 GHz Ku-and VSAT transmitters and SATCOM applications. The HMC995LP5GE amplifier I/Os are internally matched to 50 Ohms the amplifier requires no external matching components, making it ideal for use as a driver or as the final power stage in a microwave transmitter chain
The HMC995LP5GE is packaged in a leadless QFN 5 x 5 mm surface mount package which is compatible with high volume assembly equipment and is a much smaller alternative to bolt down power amplifier solutions. The HMC995LP5GE complements Hittite's unmatched selection of SMT active and passive components for microwave and millimeterwave radio applications.
12 Aug 2011
New GaN MMIC Power Amplifier Delivers 10W from 10 MHz to 10 GHz
Wideband PA is Ideal for Electronic Warfare and Test Equipment Applications
Hittite has introduced a new GaN HEMT MMIC Wideband Power Amplifier which is ideal for test & measurement equipment and military EW and ECM applications up to 10 GHz.
The HMC999 is a GaN HEMT MMIC Distributed Power Amplifier Chip which operates between 0.01 and 10 GHz. This wideband power amplifier provides 11 dB of gain, +38 dBm of output power at 1 dB gain compression and +47 dBm output IP3 at midband. For less demanding applications, the HMC999 can be operated from a drain voltage as low as +28V while still producing 5 Watts of saturated output power.
When biased for maximum output power, the HMC999 consumes 1100 mA of quiescent current from a +48V supply, and achieves approximately 18% power added efficiency at saturation. This compact MMIC power amplifier delivers 10 Watts of saturated output power in a chip area of only 7 mm2, equating to a power density of 1.5 W/mm2 across 3 decades of bandwidth. The HMC999 is extremely robust and is designed to reliably operate into partially reflective loads and to tolerate very high incident power levels.
The HMC999 is matched to 50 Ohms on-chip, and requires several external bias decoupling capacitors and an external bias tee for drain bias injection.
10 Aug 2011 New 200 mA & 1.6 A Active Bias Controllers for Class-A Amplifiers!
Excellent Bias Stability over Supply, Temperature & Process Variations
Hittite has expanded its DC Power Management product line by introducing three new, complete monolithic Class-A amplifier biasing and monitoring solutions. The HMC980LP4E, HMC981 and HMC981LP3E are ideal for power management and control in cellular infrastructure, microwave and millimeterwave communications, fiber optic, consumer, military, space and test equipment applications.
Hittite's bias control solutions automatically adjust the gate voltage to achieve a constant bias current over part-to-part and temperature variations. This auto-gate bias adjustment provides a significant advantage compared with discrete-based solutions since it eliminates manual calibration. Additionally, the HMC980LP4E, HMC981 and HMC981LP3E offer significant PCB area reduction by integrating negative voltage generator, automatic gate adjustment and power-up sequencing circuit blocks in a single monolithic device.
The HMC980LP4E targets amplifiers operating with bias currents up to 1.6 A and supply voltages from 5V to 16.5V. The device also features an optional current alarm feature, is available in a compact 4 x 4 mm plastic SMT package and requires a minimal number of external components.
The HMC981LP3E is a highly compact biasing solution that requires only eight standard external passive components and features simplified functionality compared with the previously released HMC920LP5E . Available in a 3 x 3 mm plastic SMT package, the HMC981LP3E is capable of biasing amplifiers with currents up to 200 mA and supply voltages from 4V to 12V. For customers designing with die amplifiers, the HMC981LP3E is also available in die format as the HMC981.
8 Aug 2011
Two New Power Amplifiers Deliver Output Power to 2 Watts!
Wideband GaAs pHEMT MMICs Operate Between DC and 32 GHz
Hittite announces the release of two new Wideband GaAs pHEMT MMIC Distributed Power Amplifier die which are ideal for military EW, test & measurement equipment, and telecom applications as high as 32 GHz.
The HMC994 is a 0.5 Watt GaAs pHEMT MMIC Amplifier which operates from DC to 32 GHz. This wideband distributed amplifier provides 14 dB of gain, +36 dBm output IP3 and +28 dBm of output power at 1 dB gain compression while consuming only 250 mA of quiescent current from a +10 V supply. Gain flatness for the HMC994 is excellent at ±0.6 dB across the band, while a slightly positive gain slope from 5 to 25 GHz makes this amplifier ideal for military EW & ECM, and wideband test and measurement equipment applications.
Also released is the HMC998 2 Watt GaAs PHEMT MMIC Power Amplifier. The HMC998 is rated from 100 MHz to 22 GHz, and features 12 dB of gain, +41 dBm output IP3 and +31 dBm of output power at 1 dB gain compression. This powerful distributed amplifier also delivers up to +34 dBm of saturated output power while requiring only 500 mA of quiescent current from a +15V supply. Gain flatness for the HMC998 is excellent at ±0.7 dB from 1 to 22 GHz, and designers will appreciate its positive gain slope characteristic from 2 to 16 GHz.
Both the HMC994 and the HMC998 are offered in bare die form and feature RF I/Os which are internally matched to 50 Ohms. Requiring only a few external bias decoupling components, the HMC994 and HMC998 wideband distributed amplifiers were developed for simplified integration into multi-chip-modules (MCMs) and other higher level assemblies and subsystems. The HMC994 and the HMC998 complement Hittite's broad line of distributed low noise, driver, and power amplifiers, with frequency coverage up to 65 GHz.
5 Aug 2011
Industrys First Tunable Band Reject MMIC Filter!
Band-Reject MMIC Filter Offers Fast Tuning and Octave Tuning Bandwidth
Hittite has introduced the industry's first SMT packaged, MMIC Tunable Band Reject Filter which is ideal for absorbing unwanted signals in test and measurement equipment, signal processing equipment and electronic warfare (EW) subsystems up to 25 GHz.
The HMC1000LP5E is a Tunable Band Reject Filter which exhibits only 3 dB of insertion loss within its passband of 100 MHz to 25 GHz. The band rejection frequency is user selectable, and can be varied between 3.6 and 12.2 GHz, while the -20 dB filter bandwidth can be varied from 6 to 14 %. The HMC1000LP5E offers four different stop band tuning modes, and is controlled by two analog tuning voltages between 0 and +14V. Furthermore, by virtue of its monolithic implementation, the HMC1000LP5E exhibits excellent immunity to vibration and microphonics.
The HMC1000LP5E delivers fast tuning speed of 200 ns, and provides a dynamically adjustable solution in advanced communications applications. This unique, non-reflective tunable filter exhibits good return loss in the passband as well as the stop band, and delivers very low residual phase noise of -162 dBc/Hz. The HMC1000LP5E is a solid state solution and is a much smaller alternative to physically large, mechanically tuned filter implementations.
The HMC1000LP5E is housed in a compact, RoHS compliant 5 x 5 mm QFN SMT plastic package.
27 July 2011
Powerful New Synthesized Signal Generator Sweeps from 10 MHz to 70 GHz!
Wideband Coverage and Excellent Phase Noise to Serve a Multitude of Applications
Hittite has introduced a powerful new Synthesized Signal Generator which is ideal for engineering development and production test environments in microwave and millimeterwave radio, wireless HDMI, medical, SatCom and sensor equipment applications. The new HMC-T2270 delivers the cleanest signal, the broadest frequency coverage, and the highest output power compared with any signal generator in its class.
The HMC-T2270 is a 10 MHz to 70 GHz signal generator that delivers up to +29 dBm of CW output power in 0.1 dB steps over a 60 dB dynamic range. Harmonic rejection is better than -40 dBc at 30 GHz output, while spurious products are better than -65 dBc at all integer frequencies. Phase noise is -113 dBc/Hz at 10 kHz offset from 1 GHz, and -79 dBc/Hz at 100 kHz offset from 67 GHz, with insignificant deviation over the temperature range of 0 to +35 °C. The HMC-T2270 exhibits frequency resolution of 1 Hz and fast switching speed of only 500 µs, making it ideal for frequency hopping and threat simulation applications.
The HMC-T2270 Synthesized Signal Generator was developed to provide the R&D engineer and the production test engineer with the highest level of performance and functionality, while maintaining reasonable cost. Furthermore, the broad frequency coverage of the HMC-T2270 will be attractive to OEMs involved in the development of new and emerging automotive sensors, millimeterwave communications and medical equipment, as well as those taking advantage of the globally available unlicensed communications spectrum between 57 and 66 GHz.
Built on a foundation of Hittite's innovative and market leading MMIC products, the HMC-T2270 is a versatile signal generator which is compatible with many different control interfaces (USB, GPIB and Ethernet) ensuring carefree integration in any test environment. An installation disk that accompanies each unit includes all of the drivers required to remotely control the instrument, as well as a user friendly LabWindowsTM based GUI interface compatible with Windows XP®, Windows Vista®, and Windows 7® operating systems. User control is facilitated via pull down menus that allow programming of single or swept modes in frequency and/or power. Integration of multiple HMC-T2270 instruments within a single test rack is simple and affordable.
The HMC-T2270 is compact and lightweight, making it well suited for integration within various test environments while improving overall productivity and equipment utilization.
26 July 2011
Analog Phase Shifter Covers One Octave Bandwidth!
Wideband Phase Shifter Exhibits Flat Insertion Phase vs. Frequency
Hittite has introduced a new SMT packaged MMIC Analog Phase Shifter which is ideal for phased array, industrial sensors and clock and local oscillator (LO) synchronization applications in fiber optic, military, test equipment and industrial/medical equipment.
The HMC934LP5E is a GaAs MMIC Phase Shifter which is controlled via an analog control voltage from 0 to +13V, and provides a continuously variable relative phase shift of up to 400 degrees from 1 to 2 GHz. The HMC934LP5E exhibits a low insertion loss of 3.5 dB and the insertion loss characteristic is extremely consistent versus phase shift setting and input frequency. The insertion phase of the HMC934LP5E is monotonic with respect to control voltage and offers a typical phase flatness of +3.5 / -2 degrees vs. input frequency.
The HMC934LP5E has excellent microphonics due to the monolithic design and provides a dynamically adjustable solution in advanced communications applications. The HMC934LP5E MMIC Analog Phase Shifter is ideal for synchronizing the phase of clocks in fiber optic systems and for adjusting the phase of the LO signal in microwave subsystems. The HMC934LP5E can also be used in test equipment applications, and in antenna beam-shaping, anti-jamming and signal cancellation circuits.
The HMC934LP5E is housed in a compact, RoHS compliant 5 x 5 mm QFN SMT plastic package.
22 July 2011 New 0.5 to 18.5 GHz SDLVA Features 67 dB Logging Range & 250V ESD Rating!
Available in Compact 4 x 4 mm Plastic SMT Package
Hittite has launched a new Successive Detection Log Video Amplifier (SDLVA) that operates over the full 0.5 to 18.5 GHz frequency range. Available in an extremely compact 4 x 4 mm surface mount package, the HMC1013LP4E extends the dynamic range to 67 dB and carries a class 1A ESD rating (250V HBM). The small size and wideband performance make the HMC1013LP4E SDLVA ideal for designers with space and power-constrained applications including EW and ELINT receivers, DF radar, ECM, IFM systems and missile guidance.
Also ideal for pulsed signal applications requiring high amplitude accuracy, the HMC1013LP4E is the eighth product in Hittite's family of broadband SDLVA devices that convert RF signals at their input to an output voltage that is proportional to the logarithm of the RF input signal amplitude. The HMC1013LP4E employs a successive compression topology which allows for the processing of high level signals up to +5 dBm. During typical operation, the HMC1013LP4E provides a nominal slope of 15 mV/dB.
The HMC1013LP4E is capable of processing RF pulses with amplitudes from -62 dBm to +5 dBm with 5 ns rise times, and with less than 40 ns of recovery time. The HMC1013LP4E exhibits frequency flatness of better than ±2 dB, while logarithmic linearity is better than ±2 dB over the full -40 °C to +85 °C operating temperature range. The HMC1013LP4E features significantly lower power compared with competing discrete and module SDLVA solutions, consuming only 600 mW from a single +3.3V supply.
15 July 2011
New High Linearity Digital Attenuator for Infrastructure Applications!
New 6-Bit Digital Attenuator Serves IF Frequencies From 60 to 500 MHz
Hittite has introduced a new 6-bit GaAs MMIC Digital Attenuator which is ideal for Intermediate Frequency (IF) applications in automotive, broadband, cellular/3G, LTE/4G, test & measurement equipment and military applications.
The HMC624LFLP4E is a GaAs MMIC High Linearity 6-Bit Digital Attenuator which operates from 60 to 500 MHz, and can be programmed to provide from 0.5 to 31.5 dB of relative attenuation with 0.5 dB resolution. The HMC624LFLP4E exhibits low insertion loss of 1.2 dB, high input IP3 of +55 dBm, and outstanding accuracy of 0.1 dB step error. The dual mode control interface is CMOS/TTL compatible, and accepts either a three-wire serial input or a 6 bit parallel word with either 0/+3V or 0/+5V logic for added flexibility. The HMC624LFLP4E also features user selectable power up states and a serial output for cascading other Hittite serially controlled components.
The HMC624LFLP4E is housed in a RoHS compliant 4 x 4 mm QFN leadless package, and requires no external matching components. The HMC624LFLP4E complements Hittite's broad line of MMIC analog and digital attenuators which are available in die, SMT and module formats, and serve IF and RF applications to 40 GHz.
12 July 2011 Hittite Announces New Automatic Gain Control Product Line!
Complete 50 to 800 MHz IF-AGC Solution in 25 mm² SMT Package
Hittite has introduced the first product in the new Automatic Gain Control product line. The HMC992LP5E combines a high performance analog Voltage Variable Attenuator (VVA) core with a high speed power detector in a compact 5 x 5 mm plastic package to offer a complete, compact Automatic Gain Controller (IF-AGC) solution. The HMC992LP5E is ideal for AGC implementation in the 50 to 800 MHz frequency range in LTE/WiMAX/4G, microwave radio, VSAT, test equipment and sensor applications.
The HMC992LP5E operates from 50 to 800 MHz and features a wide gain control range from -10 dB to +38 dB. The unique VVA core also provides a consistent gain slope vs. control voltage; a characteristic which enables easier implementation of AGC loops and provides a uniform transient response over the entire attenuation range.
Generally, analog VVAs exhibit large dips at certain control voltages or degradation as the attenuation is increased. The HMC992LP5E differentiates itself from these traditional VVAs by providing a constant OIP3 of +40 dBm over the entire attenuation range. The integrated power detector features excellent temperature stability, and the HMC992LP5E provides highly accurate power control in AGC closed loop operation which is independent of part-to-part and temperature variations.
The HMC992LP5E provides a flexible architecture, and can be configured with one or two attenuators, depending upon the dynamic range requirements of the application. It can also be used as a standalone, high performance VVA in an open loop configuration or as a compact IF-AGC solution in closed loop operation. Housed in a RoHS compliant 5x5 mm QFN leadless package, the HMC992LP5E requires only DC blocking capacitors and resistors, and is specified for operation from -40 °C to +85 °C.
8 July 2011
Hittite Adds Five New Tunable MMIC Filters for Frequencies to 37 GHz!
Band-Pass MMIC Filters Can Save up to 90% of PC Board Space
Hittite has introduced five new SMT packaged MMIC Band-Pass Tunable Filters which are ideal for pre-selection applications in wideband test and measurement equipment, communication systems and electronic warfare (EW) subsystems up to 37.0 GHz. These analog-tuned MMIC filters are insensitive to environmental conditions, while their small physical size provides a superior alternative to competing resonant cavity and MEMS solutions.
The HMC894LP5E, HMC895LP4E, HMC896LP4E, HMC898LP4E, and HMC899LP4E are Tunable MMIC Band Pass Filters (BPF) which enable continuously variable selection of the filter pass band based on an analog control voltage from 0 to +14V. Depending on the product selected and the frequency of operation, the pass band frequency can be tuned from 1 to 37 GHz, while the 3 dB filter bandwidth ranges from 6% to 35%.
The HMC894LP5E, HMC895LP4E, HMC896LP4E, HMC898LP4E, and HMC899LP4E are fabricated in a monolithic process which makes them insensitive to microphonics, while exhibiting very fast tuning of 200 ns. Compared to physically large switched filter banks and cavity tuned filters, these compact SMT packaged filters can save as much as 90% of the required printed circuit board area. Return losses for this filter family are typically better than 10 dB, with residual phase noise of -160 dBc/Hz at 1 MHz offset.
The HMC894LP5E, is housed in a compact, RoHS compliant 5 x 5 mm QFN SMT plastic package, while the HMC895LP4E, HMC896LP4E, HMC898LP4E, and the HMC899LP4E are housed in RoHS compliant 4 x 4 mm QFN SMT plastic packages.
27 May 2011
Hittites High Speed ADCs Target Digital Storage Oscilloscopes
Ideal for Oscilloscope Applications up to 4 GSPS
Hittite has introduced three new ADCs that are ideal for Digital Storage Oscilloscopes (DSOs). The combination of low power and 1 GSPS sample rate yields the industrys first ADC solution for 1 GSPS USB powered Oscilloscopes.
The HMCAD1520, HMCAD1511 and HMCAD1510 feature integrated functions which are ideal for DSO applications. Integrated crosspoint switches allow switching between quad, dual and single channel modes, while integrated 1 to 8 x clock dividers keep the input clock frequency constant when the number of channels is changed.
The HMCAD1511 features 8-bit resolution at 1 GSPS sample rate. A 13-bit internal resolution allows up to 32 x (30 dB) of digital gain without missing codes, allowing the user to replace analog gain circuitry with digital gain settings. At 1 GSPS and 710 mW, the HMCAD1511 consumes the industrys lowest power, enabling the implementation of USB powered oscilloscopes up to 1 GSPS.
By interleaving 2 or 4 HMCAD1511 ADCs, overall sample rates of 2 or 4 GSPS can be achieved respectively. The low size and power of HMCAD1511 make it an excellent building block for Oscilloscopes up to 4 GSPS.
The HMCAD1520 provides up to 12-bit resolution at up to 640 MSPS, making it ideal for precision DSOs. The HMCAD1511 is available as an operational mode for the HMCAD1520, allowing combined 12-bit and 8-bit implementations. The HMCAD1510 features 8-bit resolution up 500 MSPS. The device consumes the lowest power in the industry at 295 mW, making it an ideal choice for high performance handheld battery powered oscilloscopes.
All three ADCs can be evaluated with the Hittite EasySuite evaluation kits, EKIT01-AD1520, EKIT-AD1511 and EKIT-AD1510.The evaluation kits are based on Xilinx® FMC (FPGA Mezzanine Card) SP601 standard motherboards, and feature Hittite evaluation boards with on-board ADCs connected to the Xilinx® board through an FMC connector. Hittites pre-loaded EasyStack firmware performs FPGA processing, while the EasySuite PC software tool performs ADC configuration, data capture and performance analysis.
The HMCAD1520, HMCAD1511 and HMCAD1510 ADCs are housed in 7 x 7 mm plastic leadless surface mount packages
4 May 2011 DC-8 GHz Ultra Low Noise Fractional PLL!
10 MHz to 20 GHz Frequency Performance & 4 Hours of Continuous Battery Operation
Hittite has introduced the HMC703LP4E, a DC to 8 GHz, very low noise fractional synthesizer ideal for driving Voltage Controlled Oscillators (VCOs) used in Microwave Point-to-Point Radios.
As Quadrature Amplitude Modulation (QAM) in microwave radios moves to higher constellations, and signal bandwidths are tightening, excellent phase noise and spurious product performance is mandatory. The HMC703LP4E provides the ideal solution for the tough Error Vector Magnitude (EVM) and integrated phase noise specifications that these high data rate, frequency-efficient telecommunications systems require.
The HMC703LP4E features Frequency Shift Keying (FSK) modulation as well as bi-phase modulation with data rates limited by the loop filter bandwidth (typically 100 kHz). It also features a built-in sweeper mode that supports external or automatic triggered sweeps. The phase coherent frequency sweep mode can be used in test instrumentation, Frequency Modulated Continuous Wave (FMCW) sensors and automotive radars. Depending on the chosen Phase Locked-Loop (PLL) bandwidth the one or two-way frequency ramp may be continuous, or in steps.
The HMC703LP4E offers superb phase noise performance of -112 dBc/Hz at an offset of 50 kHz and a VCO frequency of 8 GHz in fractional mode. Its Floor Figure of Merit is -230 dBc/Hz in fractional mode; a performance that is typically 10 dB better than the performance of its closest competitor. When tested with the HMC508LP5E VCO, the jitter corresponding to double side-band phase noise integration from 100 Hz to 100 MHz offsets is 70.7 fs. This jitter would correspond to an EVM of 0.35% at 8 GHz and a Signal-to-Noise Ratio (SNR) of 49 dB.
Fractional synthesizers that set the channel step size with the fractional modulus often suffer from channel spurs. The HMC703LP4E exact frequency mode achieves exact channel frequencies with zero channel spurs, while double buffering enables strobed frequency hopping. The HMC703LP4E maximum PFD frequency is 115 MHz (in integer mode), which permits wider loop bandwidth, improved phase noise performance and faster locking/switching time. Typical in-band integer boundary spur is -60 dBc.
The HMC703LP4E maintains foot print compatibility for the main functions with its predecessor the HMC700LP4E. The HMC703LP4E is housed in a 4 x 4 mm plastic leadless surface mount package and provides excellent temperature stability over the -40 °C to +85 °C temperature range.
19 Apr 2011 Hittite Introduces New Battery Operated 20 GHz Signal Generator
10 MHz to 20 GHz Frequency Performance & 4 Hours of Continuous Battery Operation
Hittite has launched the HMC-T2220B, a 10 MHz to 20 GHz Portable Signal Generator. Designed to fulfill signal generation needs in the field or on the bench, the HMC-T2220B provides the highest output power, lowest harmonic levels and broadest frequency range compared with portable signal generators of similar size and cost.
Ideal for use in automated test and measurement environments and in research and development laboratories, the HMC-T2220B is a compact and lightweight frequency generator that delivers up to +28 dBm of CW output power in 0.1 dB steps over a better than 60 dB dynamic range. Harmonic rejection is better than -43 dBc at 2 GHz and spurious products are better than -65 dBc at 10 GHz. Phase noise is -119 dBc/Hz @ 100 kHz offset from 1 GHz with insignificant deviation over the temperature range of 0 °C to +35 °C. The broad frequency range of 10 MHz to 20 GHz covers all major communication bands with frequency resolution of 1 Hz, 0.1 dB power resolution and fast switching speed of 300 µs.
Internal rechargeable batteries allow for up to four hours of continuous operation, making the HMC-T2220B a portable and versatile instrument, which is particularly attractive for wireless/wired service installation, field testing or remote on-site maintenance applications.
18 Apr 2011 Industry Leading Wideband PLL with Integrated VCO!
Excellent for Low Phase Noise, Spurious Free, High SNR Applications
Hittite has introduced the HMC830LP6GE, an industry leading low noise, wide band, Fractional-N Phase-Locked-Loop (PLL) with integrated Voltage Controlled Oscillator (VCO). It is capable of generating continuous frequencies from 25 MHz to 3000 MHz. The HMC830LP6GE features industry leading phase noise and spurious performance across all frequencies, making it the best choice for applications that require excellent signal quality performance and high SNR.
The HMC830LP6GE also features an integrated Phase Detector (PD) and delta-sigma modulator which are capable of operating at up to 100 MHz to permit wider loop-bandwidths with excellent spectral performance. With its superior performance, the HMC830LP6GE is ideal for wideband multi-carrier, multi-standard cellular base stations as it can be used in up or down conversion, as a low jitter clock LO generator, or as a tunable reference source for a spurious free performance. It is also ideal for high QAM microwave point-to-point links, software defined radios and communications test equipment.
The HMC830LP6GE synthesizer Figure of Merit is -230 / -227 in integer and fractional modes respectively. Double sideband RMS jitter is less than 180 fs and the noise floor is -171 dBc/Hz in fundamental mode at 2 GHz. The worst integer boundary spurious product is around -55 dBc when falling in-band. These specifications make the HMC830LP6GE the ultimate choice for designers looking for a single, superior performance, multi-purpose, multi-application device that can cover a wide frequency range.
The HMC830LP6GE is wideband 50 Ohm matched, includes RF output power control from 0 to 9 dB (3 dB steps) and an output mute function. An Exact Frequency Mode enables output frequencies with small channel step sizes, 0 Hz frequency error and zero spurious related to channel spacing.
The HMC830LP6GE is housed in a 6 x 6 mm plastic leadless surface mount package and provides excellent temperature stability over the -40 °C to +85 °C temperature range.
7 Apr 2011
Hittite Adds Two Variable Gain Amplifiers for Wideband Applications
New Digital VGAs Cover Wireless Infrastructure Bands to 6 GHz
Hittite has introduced two new Digital Variable Gain Amplifiers (VGA) which are ideal for automotive, broadband, cellular/3G, WiMAX/4G, test & measurement equipment and military applications between 500 MHz and 6 GHz.
The HMC742HFLP5E is a wideband digitally controlled 6-bit variable gain amplifier which operates from 500 MHz to 4 GHz and can be programmed to provide from 19 dB attenuation to 12.5 dB of gain, with 0.5 dB resolution. This Digital VGA delivers noise figure of 4 dB in its maximum gain state with output IP3 of up to +39 dBm in any state. The dual mode gain control interface is CMOS/TTL compatible and accepts either a three-wire serial input or a 6 bit parallel word. The HMC742HFLP5E also features user selectable power-up states and a serial output for cascading other Hittite serially controlled components.
The HMC625HFLP5E is a wideband digitally controlled variable gain amplifier which operates from 500 MHz to 6 GHz and can be programmed to provide anywhere from 13.5 dB attenuation to 18 dB of gain, in 0.5 dB steps. This Digital VGA delivers noise figure of 6 dB in its maximum gain state with output IP3 of up to +33 dBm in any state. The dual mode control interface is CMOS/TTL compatible and accepts either a three wire serial input or a 6 bit parallel word. The HMC625HFLP5E also features user selectable power-up states and a serial output port for cascading other Hittite serial controlled components.
The HMC742HFLP5E and HMC625HFLP5E are housed in RoHS compliant 5 x 5 mm QFN leadless packages, and require no external matching components.
31 Mar 2011
Hittite Launches Industry Leading, Low Noise Voltage Regulator!
Outstanding Low Noise 400 mA Linear Voltage Regulator with High PSRR
Hittite has introduced the HMC976LP3E, a BiCMOS linear voltage regulator which is ideal for high current, ultra low noise applications such as point-to-point microwave radio where a high data throughput demands very low power supply noise. The HMC976LP3E is also ideal for high precision, high quality test instrumentation, cellular base station infrastructure and radar or military applications.
Incorporating the HMC976LP3E regulator into VCO and PLL designs significantly improves phase noise performance and makes possible the relatively high SNR needed for signals with a dense constellation.The HMC976LP3E delivers up to 400 mA of current, a PSRR (Power Supply Rejection Ratio) of less than -60 dB at 1 kHz offset, and provides excellent rejection of any preceding switching regulator, power supply noise or any other externally generated noise.
The HMC976LP3E provides an output voltage in the 1.8 to 5 V range at 400 mA and offers extremely low output noise spectral densities of 6nV√Hz at 1 kHz offset, and 3nV√Hz at 10 kHz offset which largely surpasses the available linear voltage regulators on the market.
The HMC976LP3E is housed in 3 x 3 mm plastic leadless surface mount package and provides excellent temperature stability over the -40 °C to +85 °C temperature range.
8 Mar 2011
Wideband LNAs Ideal for Military and Test Instrumentation Applications
Two new 4 x 4 mm SMT package LNAs cover 6 to 26.5 GHz
Hittite has introduced two new SMT packaged GaAs pHEMT / HEMT MMIC Low Noise Amplifiers which are ideal for microwave radio, military and space and test instrumentation applications from 6 to 26.5 GHz.
The HMC962LC4 and HMC963LC4 are low noise amplifiers which are rated from 7.5 to 26.5 GHz and from 6 to 26.5 GHz respectively. They also feature high dynamic range and excellent input and output return losses, making them ideal for military and test instrumentation applications. The HMC962LC4 has been designed to provide noise figure as low as 2.5 dB with up to 13 dB of gain and +23 dBm output IP3 from a single supply of +3.5 V @ 70 mA. The HMC963LC4 has been designed to provide noise figure as low as 2.5 dB with up to 22 dB of gain and +18 dBm output IP3 from a single supply of +3.5 V @ 45 mA. These low noise amplifiers, HMC962LC4 and HMC963LC4, are also capable of supplying up to +10 and +13 dBm P1dB output power respectively, which enables them to function as LO drivers for Hittite's wide range of balanced, I/Q or image reject mixers.
The HMC962LC4 and HMC963LC4 are housed in RoHS compliant 4 x 4 mm ceramic SMT packages, feature I/Os that are DC blocked and internally matched to 50 Ohms and are ideal for integration into compact military and test instrumentation modules.
4 Mar 2011
Hittite Launches New IF/Baseband Processing Product Line!
New Baseband Products Ideal for Zero IF Architectures
Hittite has introduced the IF / Baseband Processing integrated circuit product line which includes two new baseband compatible products that combine excellent performance with flexibility and low cost. The HMC960LP4E dual digital variable gain amplifier and the HMC900LP5E dual programmable low pass filter with driver, meet the demand for a universal multi-standard, wideband/carrier, transceiver, which is compact and capable of processing complex high density constellation signals.
The HMC960LP4E is a dual channel, digitally programmable, differential variable gain amplifier. It supports discrete gain levels from 0 to 40 dB, in 0.5 dB steps which are smooth and precise. The dual differential HMC900LP5E filter features 0 or 10 dB input gain settings and supports arbitrary bandwidths from 3.5 MHz to 50 MHz. Once calibrated, the accuracy is ±2.5% of the desired bandwidth. The 6th order Butterworth transfer function delivers superior stop band rejection while maintaining both a flat passband and minimal group delay variation.
The HMC960LP4E can be combined with the HMC900LP5E to provide a complete direct down conversion baseband line-up that drives a pair of Hittite I/Q channel Analog-to-Digital Converters (ADCs). In such a design Hittite's new HMCAD1520 12-bit ADC with its dual channel, 320 MSPS sampling rate would provide the common mode control voltage to the variable gain amplifier HMC960LP4E, a feature that greatly simplifies the ADC interface.
The HMC960LP4E and the HMC900LP5E offer high linearity, very low noise, excellent quadrature balance, high precision and superior RF isolation between channels. These features enable the receiver designer to overcome the challenge of rejecting out-of-channel interferers while maintaining a perfect noise versus linearity trade-off.
The HMC960LP4E is housed in 4 x 4 mm plastic leadless surface mount package and the HMC900LP5E is housed in a 5 x 5 mm plastic leadless surface mount package. Both products provide excellent temperature stability from -40 °C to +85 °C.
22 Feb 2011
Unsurpassed DC - 8 GHz Ultra-Low Phase Noise Synthesizer
Integer-N & Fractional-N Modes with Phase Noise Figure-of-Merit as low as -233 dBc/Hz
Hittite announces the release of a new ultra-low phase noise synthesizer IC. The HMC704LP4E has been designed for best phase noise and lowest spurious content possible in an integrated synthesizer. The HMC704LP4E is the ideal synthesizer for use in high density signal constellation applications that require excellent integrated phase noise such as microwave point-to-point radio links. The excellent performance of this product makes it ideal for use in cellular, satellite and military applications operating at frequencies up to 8 GHz, especially where ultra-low phase noise and fast frequency switching are paramount.
The HMC704LP4E features a 4 GHz 19-bit fractional divider, 24-bit delta-sigma modulator, 14-bit reference path divider, ultra low noise phase frequency detector (PFD) and a precision controlled charge pump. The device also supports extensive access to various modes of operation via a read/write serial port. Exact frequency mode with 24-bit fractional modulator provides the ability to generate fractional frequencies with zero frequency error, an important feature for Digital Pre-Distortion (DPD) systems.
In its normal mode of operation, the HMC704LP4E floor Figure-of-Merit is -230/-227 dBc/Hz in integer and fractional modes. In a special HiK mode, these figures reach -233/-230 dBc/Hz. Phase noise is -112 dBc/Hz at 8 GHz, 50 KHz offset in fractional mode. With common channel spacing (200 kHz, 20 kHz loop bandwidth), Spurious-Free Dynamic Range (SFDR) of 78 dB is typical. Even under worst case conditions, with the synthesizer tuned to within 20 KHz of an integer multiple of the comparison frequency, SFDR still exceeds 52 dB.
The HMC704LP4E is conveniently housed in a 4 x 4 mm RoHS compliant QFN leadless package and is specified for operation over -40 °C to +85 °C.
18 Feb 2011
Hittite Introduces Four New Power Amplifiers with Output Power up to 2 Watts!
Die and SMT packaged Power Amplifiers cover 12.5 43.5 GHz
Hittite announces the release of two new chip and two new SMT GaAs pHEMT MMIC Power Amplifiers which are ideal for military EW, test & measurement equipment and telecom applications as high as 43.5 GHz.
The HMC968 is a four stage GaAs pHEMT MMIC 1 Watt Power Amplifier chip which operates between 37 and 40 GHz, delivers 21 dB of gain, and +32 dBm of saturated output power at 15% PAE. The HMC968 provides +38 dBm of output IP3, has a compact size of 2.76 x 2.33 mm, and consumes only 900 mA from a +6 V supply. The HMC969 is a four stage GaAs pHEMT MMIC 1 Watt Power Amplifier chip which operates between 40 and 43.5 GHz, delivers 22 dB of gain, and +31 dBm of saturated output power at 15% PAE. These power amplifiers provide +38 dBm of output IP3, have a compact size of 2.77 x 2.32 mm, and consume 900 mA from a +6 V supply. The HMC968 and the HMC969 do not require any external matching for ease of integration into MCMs.
The HMC863LP4E is a GaAs pHEMT MMIC 0.5 Watt Power Amplifier in a SMT package, which operates between 22 and 26.5 GHz, delivers 21.5 dB of gain, and +27.5 dBm of saturated output power at 15% PAE. The HMC863LP4E provides +33 dBm of output IP3 and consumes only 350 mA from a +6 V power supply. RF I/Os are internally matched to 50 Ohms and the 4 x 4 mm plastic package eliminates the need for wirebonding and is compatible with surface mount manufacturing techniques.
The HMC965LP5E is a GaAs pHEMT MMIC 2 Watt Power Amplifier in a SMT package, which operates between 12.5 and 15.5 GHz, delivers 27 dB of gain, and +34 dBm of saturated output power at 20% PAE. The HMC965LP5E provides +40 dBm of output IP3 and consumes only 1200 mA from a +6 V power supply. RF I/Os are internally matched to 50 Ohms and the 5 x 5 mm plastic package eliminates the need for wirebonding and is compatible with surface mount manufacturing techniques.
11 Feb 2011
Ultra-Compact Tunable Filters Cover 4 to 19 GHz
Band-Pass MMIC Filters in Compact SMT packages
Hittite has introduced three new SMT packaged MMIC Band-Pass Tunable Filters which are ideal for pre-selection in multi-band communication systems, wideband radar, and in test and measurement equipment. Tunable over a 4.0 GHz to 19.0 GHz frequency range, these three new, ultra-compact, varactor-tuned, MMIC filters are inherently stable and their small physical size and insensitivity to environmental conditions provide a superior alternative to competing resonant cavity and MEMS solutions.
The HMC892LP5E, HMC893LP5E and the HMC897LP4E are tunable band-pass filters with two independent voltage controls for adjustment of passband frequency and bandwidth. The HMC892LP5E filter center frequency is adjustable from 4.0 GHz to 7.7 GHz while the HMC893LP5E and HMC897LP4E filter center frequency is adjustable over an octave bandwidth of 4.8 to 9.5 GHz, and 9.0 to 19.0 GHz, respectively. Pass-bandwidth for the HMC892LP5E and HMC893LP5E is adjustable to ±3% of filter center frequency. Return loss for the HMC892LP5E, HMC893LP5E and the HMC897LP4E is better than 10 dB across the operating frequency and the wideband rejection is at least 30 dB out to 40 GHz.
The HMC892LP5E and the HMC893LP5E are available in compact, RoHS compliant 5 x 5 mm QFN SMT plastic packages and are specified for operation from -40 °C to +85 °C.The HMC897LP4E is available in a compact, RoHS compliant 4 x 4 mm QFN SMT plastic package.
10 Feb 2011
Hittite Launches a Powerful New 10 MHz to 20 GHz Signal Generator!
Compact, Versatile Synthesized Signal Generator with Excellent Phase Noise
Hittite has launched the HMC-T2220, a new and easy to implement 10 MHz to 20 GHz Synthesized Signal Generator which provides the highest output power, lowest harmonic levels and broadest frequency range compared with any signal generator in its class.
Ideal for use in automated test and measurement environments, research, and development laboratories; the HMC-T2220 is a compact and lightweight frequency generator that delivers up to +28 dBm of CW output power in 0.1 dB steps over a 60 dB dynamic range. Harmonic rejection is better than -30 dBc and spurious products are better than -57 dBc across the entire bandwidth. Phase noise is -99 dBc/Hz @ 100 kHz offset at 10 GHz with insignificant deviation over the temperature range of 0 to +35°C. The broad frequency range of 10 MHz to 20 GHz covers all major communication bands with frequency resolution of 1 Hz and fast switching speed of 300 µs.
Built on a foundation of Hittite's high quality and market leading MMICs, this versatile signal generator features multiple interfaces (USB, GPIB and Ethernet) and innovative control software ensuring carefree integration within multiple test environments. An installation disk that accompanies each unit includes all of the drivers (LabView, C Programming) required to remotely control the device as well as a user friendly GUI interface compatible with Windows XP®, Windows Vista® or Windows 7® operating systems. User control is facilitated via pull down menus that allow programming of single or swept modes in frequency and/or power. Integration of multiple units within a production test environment is easy and affordable.
Furthermore, to facilitate integration into existing HMC-T2100 applications, the HMC-T2220 has a HMC-T2100 compatibility mode. In this mode, the HMC-T2220 identifies itself as a HMC-T2100 so that the HMC-T2100 USB drivers will work for a HMC-T2220, and programs will recognize a HMC-T2220 as a HMC-T2100. The HMC-T2220 frequency resolution, maximum and minimum power values and minimum sweep dwell time also change to match the HMC-T2100.
The HMC-T2220 is compact and lightweight making it well suited for integration within various test environments, while improving overall productivity and equipment utilization. The size and capability of the HMC-T2220 ensures a simpler test configuration coupled with exceptional value.
1 Feb 2011
New Ultra-Low Noise Tri-Band Frequency PLLs with Integrated VCO!
Excellent Phase Noise & Spurious Products Performance is Ideal for Cellular/4G Infrastructure
Hittite has launched two full-featured Fractional-N PLLs with integrated Voltage Controlled Oscillators (VCOs). The HMC837LP6CE and HMC840LP6CE include a wideband, low noise VCO with auto-calibration subsystem, low noise PFD and dividers, and a precision charge-pump.
The HMC837LP6CE and HMC840LP6CE feature exact frequency mode operation, deliver exceptional phase noise and industry-leading spurious performance while consuming only 630 mW. No other pre-packaged PLL solution is capable of reliably delivering this level of phase noise performance: -227 dBc/Hz Figure-Of-Merit (FOM) in fractional-N mode and -230 dBc/Hz FOM in integer-N mode. The integrated double side band phase noise for these products is lower than -50 dBc. The RMS jitter is less than 180 fs.
The phase detector (PD) features cycle slip prevention (CSP) technology to allow faster frequency hopping times. Ultra low in-close phase noise and low spurious also allows wider loop bandwidths for faster frequency hopping and low micro-phonics.
With common channel spacing (200 kHz, 20 kHz loop bandwidth), Spurious-Free Dynamic Range (SFDR) of 78 dB is typical. Even under worst case conditions, with the synthesizer tuned very close to an integer multiple of the comparison frequency, SFDR still exceeds 52 dB.
The HMC837LP6CE is tunable over three separate frequency bands: 1025 MHz to 1150 MHz, 2050 MHz to 2300 MHz, and 4100 MHz to 4600 MHz. The HMC840LP6CE is tunable over three separate frequency bands: 1310 MHz to 1415 MHz, 2620 MHz to 2830 MHz, and 5240 MHz to 5660 MHz.
Both the HMC837LP6CE and the HMC840LP6CE are housed in 6 x 6 mm plastic leadless surface mount packages and provide excellent temperature stability from -40 °C to +85 °C.
31 Jan 2011
Three New MMIC Phase Shifters Cover 8 to 24 GHz
Low Phase Error Analog Phase Shifters Ideal for Wideband Applications
Hittite has introduced three new SMT packaged MMIC Phase Shifters. The HMC931LP4E, HMC932LP4E and the HMC933LP4E are ideal for phased array, as well as sensor and subsystem applications in fiber optic, military, test, and industrial/medical equipment from 8 to 24 GHz.
The three MMIC Analog Phase Shifters provide continuous phase shift of up to 470 degrees and accept an analog control voltage from 0 to 13 V. The HMC931LP4E phase shifter covers 8 to 12 GHz, while the HMC932LP4E and HMC933LP4E phase shifters cover 12 to 18 and 18 to 24 GHz, respectively. The HMC931LP4E, HMC932LP4E, and HMC933LP4E exhibit consistent insertion loss as low as 3.5 dB, with excellent phase accuracy of ±10 degrees across the band.
The HMC931LP4E, HMC932LP4E, and HMC933LP4E MMIC Phase Shifters are ideal for adjusting the phase of clocks in fiber optic systems and test equipment and in antenna beam-shaping and signal cancellation circuits.
The HMC931LP4E, HMC932LP4E, and HMC933LP4E analog phase shifters are housed in compact leadless QFN 4 x 4 mm SMT packages.
21 Jan 2011
Hittite Launches 14 Gbps 2 x 2 Crosspoint Switch!
Ideal for 10 GbE, 16G Fibre Channel & Infiniband Networks
Hittite has launched the first product in its new Crosspoint Switch product line. The HMC857LC5 is easy to use, protocol agnostic, avoids complex programming and is ideal for driving and receiving high speed signals through backplanes up to 14.025 Gbps. The HMC857LC5 typically consumes less than 300 mW with all channels operational and is ideal for 10 GbE, 16G Fibre Channel, and Infiniband networks. The HMC857LC5 is the first high speed, low power 2 x 2 crosspoint to support rate doubling functionality of any input data rate up to 14.025 Gbps. A typical application could include 6.375 Gbps XAUI rate doubling for more efficient transmission over existing copper traces, which allows customers to field-upgrade equipment to handle greater bandwidth by upgrading line cards and switch cards in existing equipment.
The HMC857LC5 2 x 2 crosspoint switch also features selector port operation up to 14 GHz. The selector routes the differential inputs to either one or both of the desired outputs upon assertion of the appropriate selected port. The HMC857LC5 may be used as a dual 2:1 selector or in redundant switching applications and also features an output level control pin, VR, which may be programmed from 475 to 1200 mVp-p to allow for loss compensation or signal level optimization. The HMC857LC5 also features fast rise/fall times of 21 ps and a propagation delay of only 117 ps, making it beneficial for broadband test and measurement applications. Random and deterministic jitter is specified at 0.08 ps rms, and 2 ps p-p respectively.
All differential inputs to the HMC857LC5 are CML and terminated on-chip with 50 Ohms to the positive supply, GND, and may be DC or AC coupled. Outputs can be connected directly to a 50 Ohm ground terminated system or drive devices with CML logic input.
The HMC857LC5 is specified over the full -40 °C to +85 °C temperature range, operates from a single -3.3 V DC supply, and is available in a ceramic RoHS compliant 5 x 5 mm SMT package.
19 Jan 2011
Single-Ended RMS Detectors Span 72 dB Dynamic Range!
150 MHz Envelope Detection Bandwidth is Ideal for WiMAX/4G/LTE
Hittite Microwave Corporation, the world class supplier of complete MMIC based solutions for communication & military markets has launched two new RMS power detectors, the HMC1020LP4E and HMC1021LP4E, which are ideal for broadband, high-dynamic-range applications requiring repeatable measurement of average signal power; especially where detection of RF and intermediate-frequency (IF) wave shape and/or crest factor change is crucial. Both devices feature RMS detection cores that operate from DC to 3.9 GHz and achieve input sensing ranges to 72 dB and 70 dB, respectively (with measurement accuracy of ±1 dB), while using a simple single-ended input interface.
The HMC1021LP4E, which integrates a fast envelope detector core with a detection bandwidth higher than 150 MHz, also serves applications that require instantaneous envelope measurements of RF carriers with wide modulation bandwidths. Additionally, the instantaneous envelope output can be used to create fast, excessive RF power protection, PA linearization and efficiency enhancing envelope tracking PA implementations. These RMS power detectors can tackle average power measurements on signals with complex modulation including those with peak-to-average power ratios (crest factors) as high as 15 dB. In fact, the HMC1020LP4E and HMC1021LP4E maintain high accuracy independent of the modulation of the RF carrier. Both RMS detectors achieve less than 0.1 dB detection deviations with respect to CW response under all modulation schemes including LTE, HSDPA, CDMA, W-CDMA, TD-SCDMA, and WiMAX/WiBRO.
Designed for ease of use compared with traditional differential RMS power detectors, the HMC1020LP4E and HMC1021LP4E detectors provide a simple single-ended interface which eliminates the cost of a balun along with the additional printed-circuit-board (PCB) real estate needed for mounting the balun. The simpler circuitry possible with a single-ended interface also contributes to increased measurement repeatability.
Both the HMC1020LP4E and HMC1021LP4E operate from a +5V single supply, are housed in 4 x 4 mm plastic leadless surface mount packages and provide excellent temperature stability from -40 °C to +85 °C.
17 Jan 2011
New VVA and VGA Products are Ideal for High Linearity Applications to 6 GHz
New Wideband Products Feature High IP3 at all Gain / Attenuation Settings
Hittite introduced a new SMT packaged wideband Voltage Variable Attenuator (VVA) and a new SMT wideband analog Variable Gain Amplifier (VGA). These new high linearity products are ideal for broadband, cellular/3G, WiMAX/4G and military EW applications from 400 MHz to 6 GHz.
The HMC973LP3E is an absorptive VVA, which operates from 0.5 to 6 GHz and is ideal for applications which require a continuously variable attenuation setting. The HMC973LP3E accepts a single analog control signal between 0 and +5V, and provides up to 26 dB of attenuation range. This high range VVA features a monolithic shunt-type topology which is non-reflective and well matched at all control voltage settings; furthermore, unlike other GaAs FET based VVAs, the HMC973LP3E exhibits excellent linearity of +35 dBm input IP3 throughout its control range. The HMC973LP3E is housed in a RoHS compliant 3 x 3 mm QFN leadless plastic package, and requires no external matching components.
Also released is the HMC972LP5E analog controlled VGA, which is comprised of two high linearity VVAs and a high linearity amplifier. This wide range analog VGA operates from 0.5 to 6 GHz, and can be set to provide between 35 dB of attenuation, and 15 dB of gain. The HMC972LP5E accepts a single control voltage between 0 and +5V, to achieve up to 50 dB of gain/attenuation variation. This high linearity analog VGA also delivers noise figure of only 7.5 dB in its maximum gain state, and exhibits a high output IP3 of up to +28 dBm. The HMC972LP5E is housed in a RoHS compliant 5 x 5 mm QFN leadless plastic package, and requires no external matching components.
10 Jan 2011
Hittite Introduces Three New Power Amplifiers with Output Power to 4 Watts!
Fully Matched MMIC Amplifiers for Microwave Radio cover 12 to 31.5 GHz
Hittite announces the release of two new chip and one new SMT GaAs pHEMT MMIC Power Amplifiers. These amplifiers are ideal for military EW, test & measurement equipment, and telecom applications as high as 31.5 GHz.
The HMC949 is a four stage GaAs pHEMT MMIC 2 Watt Power Amplifier chip, which operates between 12 and 16 GHz, delivers 31 dB of gain, and +35.5 dBm of saturated output power at 26% PAE. The HMC949 provides +42 dBm of output IP3, has a compact size of 2.82 x 1.50 mm, and consumes only 1200 mA from a +7V supply. The HMC949 RF I/Os do not require any external matching for ease of integration into Multi-Chip-Modules (MCMs).
The HMC950 is a four stage GaAs pHEMT MMIC 4 Watt Power Amplifier chip, which operates between 12 and 16 GHz, delivers 28 dB of gain, and +37 dBm of saturated output power at 23% PAE. The HMC950 provides +44.5 dBm of output IP3, has a compact size of 3.24 x 4.5 mm, and consumes 2400 mA from a +7V supply. The HMC950 RF I/Os do not require any external matching for ease of integration into MCMs.
The HMC943LP5E is a GaAs pHEMT MMIC 1.5 Watt Power Amplifier in a SMT package, which operates between 24 and 31.5 GHz, delivers 21 dB of gain, and +34 dBm of saturated output power at 24% PAE. It provides +41 dBm of output IP3 and consumes only 1200 mA from a +5.5V power supply. The HMC943LP5E RF I/Os internally matched to 50 Ohms and the 5x5 mm plastic package eliminates the need for wirebonding and is compatible with surface mount manufacturing techniques.
7 Jan 2011
New Wideband Limited RF Output SDLVAs in Chip & SMT!
Ideal for EW, ELINT, ECM & IFM Receivers & DF Radar Systems
Hittite has launched two new Successive Detection Log Video Amplifiers (SDLVAs) with a limited RF output feature that operates over the 1 to 26 GHz and 1 to 20 GHz frequency ranges respectively. The HMC813 and the HMC813LC4B are ideal for designers with space and power-constrained applications including EW and ELINT receivers, DF radar, ECM, IFM systems, and missile guidance
Available in die and ceramic 4x4 mm SMT formats, the HMC813 and the HMC813LC4B feature power limiter circuitry at their RF outputs and carry a class 1A ESD rating (250V HBM). Also ideal for high speed channelized systems that require improved ESD performance, these SDLVAs employ a successive compression topology, which delivers a high logging range of 55 dB and provides a nominal log video output slope of 15 mV/dB. The HMC813 and the HMC813LC4B are capable of processing RF pulses with amplitudes from -53 dBm to +7 dBm with less than 10 ns rise/fall times, and with recovery times of less than 20 ns. These SDLVAs exhibit frequency flatness of better than ±1.5 dB at -25 dBm input power, while logarithmic linearity is better than ±0.5 dB over the full -55 °C to +85 °C operating temperature range. The HMC813 and the HMC813LC4B consume less than 153 mA from a single +3.3V supply.
6 Jan 2011 Hittite Adds Three New I/Q Downconverter/Receiver Products
New Low Noise, High Linearity Converters Cover Applications from 5.6 to 24 GHz
Hittite has introduced three new SMT packaged I/Q Downconverter / Receivers which are ideal for point-to-point radio, military EW/ECM and satellite communications applications from 5.6 to 24 GHz.
The HMC951LP4E, HMC966LP4E and HMC967LP4E are GaAs MMIC I/Q Downconverter/Receivers, each comprised of an LNA followed by an image reject mixer, which is driven by an LO buffer amplifier. The HMC951LP4E covers RF frequencies from 5.6 to 8.6 GHz while the HMC966LP4E and HMC967LP4E cover 17 to 20 GHz and 21 to 24 GHz respectively. Conversion gain for these three I/Q Downconverters ranges between 13 and 15 dB, with noise figure values as low as 2.3 dB.
The I/Q mixer topology used in the HMC951LP4E, HMC966LP4E and the HMC967LP4E delivers image rejection performance as low as -40 dBc while eliminating the need for a filter following the LNA and removing thermal noise at the image frequency. These highly integrated converters provide I and Q mixer outputs and an external 90° hybrid can be used to select the desired IF sideband. The HMC951LP4E, HMC966LP4E and HMC967LP4E MMIC based converters are housed in 4x4 mm plastic QFN SMT packages and are much more compact alternatives to hybrid and MIC (Microwave Integrated Circuit) style image reject downconverter assemblies.
3 Jan 2011
New 10 GHz Latched Comparators in Compact, Plastic SMT Packages!
New Comparators Target High Volume Medical, Industrial & ATE Applications
Hittite Microwave Corporation has extended its high performance Comparator product line with the launch of three new products in compact, plastic SMT packages. The HMC674LP3E, HMC675LP3E and the HMC676LP3E provide lower power consumption compared with traditional comparator solution and are optimized for high performance, high volume applications.
A unique combination of 10 GHz input bandwidth, low propagation delay dispersion, low jitter, and high input common-mode range, make these comparators ideal for medical, industrial, ATE, high speed instrumentation and communications applications. The HMC674LP3E, HMC675LP3E and the HMC676LP3E are monolithic comparators which feature 10 GHz input bandwidth, level-latched inputs and reduced swing PECL, CML and ECL output drivers respectively. The HMC674LP3E, HMC675LP3E and the HMC676LP3E comparators offer less than 100 ps propagation delay, and support 60 ps minimum pulse width with only 0.2 ps rms random jitter. These devices also feature differential latch control and programmable hysteresis, and they may be configured to operate in either latch mode, or as tracking comparators. With overdrive and slew rate dispersion of 10 ps and power consumption of less than 140 mW, these comparators are also ideal for digital receivers, clock and data restoration circuits, and pulse spectroscopy.
Housed in compact plastic RoHS compliant 3x3 mm SMT packages and specified for operation from -40 °C to +85 °C, the HMC674LP3E, HMC675LP3E and the HMC676LP3E complement the previously released HMC674LC3C, HMC675LC3C and HMC676LC3C level-latched comparators, and are pin-for-pin compatible. |
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