Analog Devices

HMC983LP5E is a fractional frequency divider targeted for fractional-N frequency synthesis, and stand-alone low noise frequency divider applications that require exceptional spurious performance.Although the HMC983LP5E can work with any VCO and/or compatible Phase Detector, best performance and features will be achieved when paired with the companion part, the HMC984LP4E.Fabricated in SiGe BiCMOS process, the HMC983LP5E features a 48-bit Delta Sigma Fractional Modulator (DSM) with programmable phase accumulator size, enabling precise control of frequency step size and resolution. Integrated DSM can generate frequencies with nearly 0 Hz frequency error. The DSM also includes a built-in programmable frequency sweep capability, with various automatic and user defined sweep modes and triggering options, including hardware trigger pin, or SPI trigger with optional delayed trigger.HMC983LP5E is a versatile part capable of various configurations. It has 5 general purpose I/Os (GPIOs). DSM outputs are made available from the GPIO port, enabling the HMC983LP5E to import and/or export DSM sequences for various configuration options.HMC983LP5E divider outputs are differential, open collector with programmable current to accommodate different off-chip loads.ApplicationsTest EquipmentPortable InstrumentsHigh Performance Fractional-N Frequency Synthesizerswith Ultra Low SpuriousStand-Alone Divider and/or Delta-Sigma Modulator

HMC984LP4E is a high-performance, ultra-low phase noise, SiGe BiCMOS Phase-Frequency Detector and Charge Pump targeted to be used together with the HMC983LP5E (Fractional Frequency Divider) to together form a high performance, low noise, ultra low spurious emission fractional-N frequency synthesizer.Although best performance and maximum features are achieved when used together with the HMC983LP5E, the HMC984LP4E can also be used as a stand-alone, low phase noise phase frequency detector.The HMC984LP4E can receive differential VCO input, and a reference frequency as high as 150 MHz. It features a 14-bit reference frequency R-Divider, and automatic and/or configurable Lock Detect Indicator, as well as integrated CSP (Cycle Slip Prevention) capability, when used together with the HMC983LP5E, that significantly improves frequency lock time.Integrated Charge Pump phase swap option enables seamless interfaced to VCOs and active loop filters with inverted polarity.Additional features include adjustable Charge Pump gain and offset current that improve linearity and performance, and a Soft Reset feature that resets all register to default values without having to perform a power-cycle.The HMC984LP4E is housed in a compact 24 pin 4×4 mm LP4 package.

The HMC985A is an absorptive Voltage Variable Attenuator (VVA) which operates from 20 - 50 GHz and is ideal in designs where an analog DC control signal must be used to control RF signal levels over a 35 dB dynamic range. It features two shunt-type attenuators which are controlled by two analog voltages, Vctrl1 and Vctrl2. Optimum linearity performance of the attenuator is achieved by first varying Vctrl1 of the first attenuation stage from -5V to 0V with Vctrl2 fixed at -5V. The control voltage of the second attenuation stage, Vctrl2, should then be varied from -5V to 0V with Vctrl1 fixed at 0V.Furthermore, if the Vctrl1 and Vctrl2 pins are connected together it is possible to achieve the full analog attenuation range with only a small degradation in input IP3 performance. Applications include AGC circuits and temperature compensation of multiple gain stages in microwave point to point and VSAT radios.Applications:Point-to-Point RadioVSAT RadioTest InstrumentationMicrowave SensorsMilitary, ECM & Radar

The HMC986A is a reflective, single-pole, double throw (SPDT) switch, manufactured using a gallium arsenide (GaAs) process. This switch typically provides low insertion loss of 2.3 dB and high isolation of 30 dB in broadband frequency range from 0.1 GHz to 50 GHz.This switch operates with two negative logic control voltages from −5 V to −3 V. All electrical performance data is acquired with the RFx pads of the HMC986A connected to 50 Ω transmission lines via one 3.0 mil × 0.5 mil ribbon bond of minimal length.ApplicationsTest instrumentationMicrowave radios and very small aperture terminals (VSATs)Military radios, radars, and electronic counter measures (ECMs)Broadband telecommunications systems

The HMC987LP5E 1-to-9 fanout buffer is designed for low noise clock distribution. It is intended to generate relatively square wave outputs with rise/fall times < 100 ps. The low skew and jitter outputs of the HMC987LP5E, combined with its fast rise/fall times, leads to controllable low-noise switching of downstream circuits such as mixers, ADCs/DACs or SERDES devices. The noise floor is particularly important in these applications, when the clocknetwork bandwidth is wide enough to allow squarewave switching. Driven at 2 GHz, outputs of the HMC987LP5E have a noise floor of –166 dBc/Hz, corresponding to a jitter density of 0.6 asec/rtHz - or 50 fs over an 8 GHz bandwidth.The input stage can be driven single-ended or differentially, in a variety of signal formats (CML, LVDS, LVPECL or CMOS), AC or DC coupled. The input stage also features adjustable input impedance. It has 8 LVPECL outputs, and 1 CML output with adjustable swing/power-level in 3 dB steps.Individual output stages may be enabled or disabled for power-savings when not required using either hardware control pins, or under control of a serial-port interface.APPLICATIONSSONET, Fibre Channel, GigE Clock DistributionADC/DAC Clock DistributionLow Skew and Jitter Clock or Data FanoutWireless/Wired CommunicationsLevel TranslationHigh Performance InstrumentationMedical ImagingSingle-Ended to Differential Conversion

The HMC988LP3E is a an ultra low noise clock divider capable of dividing by 1/2/4/8/16/32. It is a versatile device with additional functionality including adjustable output phase, adjustable delay in 60 steps of ~ 20 ps, a clock synchronization function, and a clock invert option.Housed in a compact 3 × 3 mm SMT QFN package, the clock divider offers a high level of functionality. The device works with 3.3V supply or may be connected to 5V supply and utilize the optional on-chip regulator. This on-chip regulator may be bypassed.Up to 8 addressable HMC988LP3E devices can be used together on the SPI bus.The HMC988LP3E is ideally suited for data converter applications with extremely low phase noise requirements.APPLICATIONSBasestation Digital Pre-Distortion Paths (DPD)High Performance Automated Test Equipment (ATE)Backplane Clock Skew ManagementPhase Coherence of Multiple Clock PathsClock Delay Management ton Improve Setup & Hold Time MarginsPCB Signal Flight Time Offset CircuitsTrack and Hold Circuits for ADC/DACs

The HMC994A is a GaAs MMIC pHEMT Distributed Power Amplifier which operates between DC and 30 GHz. The amplifier provides 14 dB of gain, +39 dBm output IP3 and +28 dBm of output power at 1 dB gain compression while requiring 250 mA from a +10 V supply. The HMC994A exhibits a slightly positive gain slope from 2 to 20 GHz, making it ideal for EW, ECM, Radar and test equipment applications. With up to 39 dBm Output IP3 the HMC994A is ideal for high linearity applications in military and space as well as test equipment where high order modulations are used. The HMC994A amplifier I/Os are internally matched to 50 Ohms facilitating integration into Multi-Chip-Modules (MCMs). All data is taken with the chip connected via two 0.025 mm (1 mil) wire bonds of minimal length 0.31 mm (12 mils).ApplicationsTest InstrumentationMilitary & SpaceFiber Optics

The HMC996LP4E is a GaAs PHEMT MMIC analog variable gain amplifier and / or driver amplifier which operates between 5 and 12 GHz. Ideal for microwave radio applications, the amplifier provides up to 18.5 dB of gain, output P1dB of up to +23 dBm, and up to +34 dBm of output IP3 at maximum gain, while requiring only 170 mA from a +5V supply. Gain control voltage pin (Vctrl) is provided to allow variable gain control up to 22 dB. Gain flatness is excellent making the HMC996LP4E ideal for EW, ECM and radar applications. The HMC996LP4E is housed in a RoHS compliant 4 x 4 mm QFN leadless package and is compatible with high volume surface mount manufacturing.ApplicationsPoint-to-Point RadioPoint-to-Multi-Point RadioEW & ECM SubsystemsX-Band RadarTest Equipment & Sensors