The ADCLK846 is a 1.2 GHz/250 MHz, LVDS/CMOS, fanout buffer optimized for low jitter and low power operation. Possible configurations range from 6 LVDS to 12 CMOS outputs, including combinations of LVDS and CMOS outputs. Two control lines are used to determine whether fixed blocks of outputs are LVDS or CMOS outputs.The clock input accepts various types of single-ended and differential logic levels including LVPECL, LVDS, HSTL, CML, and CMOS.Table 8 provides interface options for each type of connection. The SLEEP pin enables a sleep mode to power down the device.This device is available in a 24-pin LFCSP package. It is specified for operation over the standard industrial temperature range of ?40?C to +85?C.APPLICATIONS Low jitter clock distribution Clock and data signal restoration Level translation Wireless communications Wired communications Medical and industrial imaging ATE and high performance instrumentation

The AD9837 is a low power, programmable waveform generatorcapable of producing sine, triangular, and square wave outputs.Waveform generation is required in various types of sensing,actuation, and time domain reflectometry (TDR) applications. The outputfrequency and phase are software programmable, allowing easytuning. The frequency registers are 28 bits: with a 16 MHz clock rate, resolution of 0.06 Hz can be achieved; with a 5 MHz clock rate, the AD9837can be tuned to 0.02 Hz resolution.The AD9837 is written to via a 3-wire serial interface. This serialinterface operates at clock rates up to 40 MHz and is compatiblewith DSP and microcontroller standards. The device operateswith a power supply from 2.3 V to 5.5 V.The AD9837 has a power-down (SLEEP) function. Sections of the device that are not being used can be powered down to minimize the current consumption of the part. For example, the DAC can be powered down when a clock output is being generated.The AD9837 is available in a 10-lead LFCSP_WD package.APPLICATIONS Frequency stimulus/waveform generation Liquid and gas flow measurement Sensory applications: proximity, motion, and defect detection Line loss/attenuation Test and medical equipment Sweep/clock generators Time domain reflectometry (TDR) applications

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.APPLICATIONS SONET, Fibre Channel, GigE Clock Distribution ADC/DAC Clock Distribution Low Skew and Jitter Clock or Data Fanout Wireless/Wired Communications Level Translation High Performance Instrumentation Medical Imaging Single-Ended to Differential Conversion

The HMC6380LC4B is a wideband MMIC VoltageControlled Oscillator which incorporates the resonator,negative resistance device, and varactor diode. Outputpower and phase noise performance are excellentover temperature due to the oscillator?s monolithicconstruction. The Vtune port accepts an analog tuningvoltage from 0 to +23V. The HMC6380LC4B VCOoperates from a single +5V supply, consumes only75 mA of current, and is housed in a RoHS compliantSMT package. This wideband VCO uniquely combinesthe attributes of ultra small size, low phase noise, lowpower consumption, and wide tuning range.Applications Industrial/Medical EquipmentMeasurement EquipmentSatcomMilitary Radar, EW, & ECM

The HMC534LP5(E) is a GaAs InGaP Heterojunction Bipolar Transistor (HBT) MMIC VCO. The HMC534LP5(E) integrates resonators, negative resistance devices, varactor diodes and feature half frequency and divide-by-4 outputs. The VCO?s phase noise performance is excellent over temperature, shock, and process due to the oscillator?s monolithic structure. Power output is +11 dBm typical from a +5V supply voltage. The prescaler and RF/2 functions can be disabled to conserve current if not required. The voltage controlled oscillator is packaged in a leadless QFN 5x5 mm surface mount package, and requires no external matching components.APPLICATIONS Point-to-Point/Multi-point Radio Test Equipment & Industrial Controls SATCOM Military End-Use

The HMC632LP5(E) is a GaAs InGaP Heterojunction Bipolar Transistor (HBT) MMIC VCO. The HMC632LP5(E) integrates resonators, negative resistance devices, varactor diodes and features half frequency and divide-by-4 outputs. The VCO?s phase noise performance is excellent over temperature, shock, and process due to the oscillator?s monolithic structure. Power output is +9 dBm typical from a +5V supply voltage. The prescaler and RF/2 functions can be disabled to conserve current if not required. The voltage controlled oscillator is packaged in a leadless QFN 5x5 mm surface mount package, and requires no external matching components.APPLICATIONS Point to Point/Multipoint Radio Test Equipment & Industrial Controls SATCOM Military End-Use

The HMC734 is a GaAs InGaP Heterojunction Bipolar Transistor (HBT) MMIC VCO. The HMC734 integrates a resonator, negative resistance device, varactor diode and features a divide-by-4 frequency output. The VCO's phase noise performance is excellent over temperature, shock, and process due to the oscillator's monolithic structure. Power output is +18 dBm typical from a +5V supply voltage. The prescaler function can be disabled to conserve current if not required. The voltage controlled oscillator is packaged in a leadless QFN 5?5 mm surface mount package, and requires no external matching components.APPLICATIONS Point-to-Multi-Point Radios Test Equipment & Industrial Controls SATCOM Military End-Use

The HMC702 is a SiGe BiCMOS fractional-N frequency synthesizer. The synthesizer includes a 8GHz 16-bit RF N-Divider, a 24-bit delta-sigma modulator, a very low noise digital phase frequency detector (PFD), and a precision controlled charge pump. In addition the synthesizer supports an external step tuned VCO.The fractional synthesizer features an advanced delta-sigma modulator design that allows ultra-fine frequency step sizes. The synthesizer features the ability to alter both the phase-frequency detector (PFD) gain and the cycle slipping characteristics of the PFD. This feature can reduce the time to arrive at the new frequency by 50% vs. conventional PFDs. Ultra low in-close phase noise also allows wider loop bandwidths for faster frequency hopping.The synthesizer contains a built-in linear sweeper function, which allows it to perform frequency chirps with a wide variety of sweep times, polarities and dwells, all with an external or automatic sweep trigger.A General Purpose Output (GPO) bus supports the use of multiple VCO s. In addition the synthesizer has a number of auxiliary clock generation modes that can be accessed via the GPO.Applications Base Stations for Mobile Radio (GSM, PCS, DCS, CDMA, WCDMA) Wireless LANs, WiMax Communications Test Equipment CATV Equipment FMCW Sensors Automotive Radar Phased-Array Systems

The HMC850LC3 is a 1:2 Fanout Buffer designed to support data transmission rates up to 28 Gbps, and clock frequencies as high as 20 GHz. All differential inputs and outputs are DC coupled and terminated on chip with 50 ??resistors to the positive supply, ground. The outputs may be used in either single-ended or differential modes, and should be AC or DC coupled into 50 ? resistors connected to ground.The HMC850LC3 also features an output level control pin, VR which allows for loss compensation or for signal level optimization. The HMC850LC3 operates from a single -3.3V DC supply and is available in a ceramic RoHS compliant 3?3 mm SMT package.APPLICATIONS RF ATE Applications Broadband Test & Measurement Serial Data Transmission?up to 28 Gbps Clock Buffering up to 20 GHz

The HMC783LP6CE is a fully functioned Fractional-N Phase-Locked-Loop (PLL) with an Integrated Voltage Controlled Oscillator (VCO). The input reference frequency range is 100 kHz to 220 MHz while the advanced delta-sigma modulator design in the fractional PLL allows both ultra-fine step sizes and very low spurious products. The highly integrated structure provides excellent phase noise performance over temperature, shock and process. The HMC783LP6CE is packaged in a leadless QFN 6 x 6 mm surface mount package. The output power is 11 dBm typical, making the HMC783LP6CE ideal for driving the LO port of many of Hittite?s Hi Linearity and I/Q mixer products.For theory of operation and register map refer to the 'PLLs w/ Integrated VCO - Microwave VCOs' Operating Guide.Applications VSAT Radio Point-to-Point / Multi-Point Radio Test Equipment & Industrial Control Military End-Use Phased Array Applications