The HMC662LP3E Logarithmic Detector converts RF signals at its input, to a proportional DC voltage at its output. The HMC662LP3E employs successive compression topology which delivers high dynamic range over a wide input frequency range. As the input power is increased, successive amplifiers move into saturation one by one creating an approximation of the logarithm function.The output of a series of square law detectors is summed, converted into the voltage domain and buffered to drive the LOG OUT output. The HMC662LP3E provides a nominal logarithmic slope of +13 mV/dB and an intercept of -127 dBm at 18 GHz. Ideal as a log detector for high volume microwave radio and VSAT applications, the HMC662LP3E is housed in a compact 3x3 mm RoHS compliant SMT plastic package.Applications Point-to-Point Microwave Radio VSAT Wideband Power Monitoring Receiver Signal Strength Indication (RSSI) Test & Measurement

The HMC742A is a digitally controlled variable gain amplifier which operates from 70 MHz to 4 GHz, and can be programmed to provide from -19.5 dB attenuation, to 12 dB of gain, in 0.5 dB steps. The HMC742A 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 accepts either a three-wire serial input or a 6 bit parallel word. The HMC742A also features a user selectable power up state and a serial output for cascading other serially controlled Hittite components. The HMC742A is housed in an RoHS compliant 5x5 mm QFN leadless package, and requires minimal external components.Applications Cellular/3G Infrastructure WiBro / WiMAX / 4G Microwave Radio & VSAT Test Equipment and Sensors IF & RF Applications

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 HMC853LC3 is a D-Type Flip-Flop designed to support data transmission rates of up to 28 Gbps, and clock frequencies as high as 28 GHz. During normal operation, data is transferred to the outputs on the positive edge of the clock. Reversing the clock inputs allows for negative-edge triggered applications.All differential inputs to the HMC853LC3 are CML and terminated on-chip with 50 ? to the positive supply, VCC, and may be AC or DC coupled. The differential CML outputs are source terminated to 50 ??and may also be AC or DC coupled. Outputs can be connected directly to a 50 ??VCC-terminated system, while DC blocking capacitors may be used if the terminating system is 50 ??to ground. The HMC853LC3 also features an output level control pin, VR, which allows for loss compensation or signal-level optimization. the HMC853LC3 operates from a single 3.3 V supply and is available in ROHS-compliant 3?3 mm SMT package.APPLICATIONS RF ATE Applications Broadband Test & Measurement Serial Data Transmission?up to 28 Gbps Digital Logic Systems up to 28 GHz

The HMC874LC3C is a SiGe monolithic, ultra fast comparator which features reduced swing PECL output drivers and clock inputs. The comparator supports 20 Gbps operation while providing 120 ps clock to data output delay and 60 ps minimum pulse width with 0.2 ps rms random jitter (RJ). 25 Gbps operation can be achieved with reduced output voltage swing. Overdrive and slew rate dispersion are typically 10 ps, making the device ideal for a wide range of applications from ATE to broadband communications. The reduced swing PECL output stages are designed to directly drive 400 mV into 50 ? terminated to +1.3V while maintaining compatibility with other PECL logic families. The HMC874LC3C features high speed latches with programmable hysteresis, and is configured to operate as a clocked comparator.APPLICATIONS ATE Applications High Speed Instrumentation Digital Receiver Systems Pulse Spectroscopy High Speed Trigger Circuits Clock & Data Restoration

The HMC772LC4 is a GaAs MMIC HEMT Low Noise Wideband Amplifier which operates between 2 and 12 GHz. The amplifier provides 15 dB of gain, 1.8 dB noise figure up to 12 GHz and output IP3 of +25 dBm, while requiring only 45 mA from a +4V supply voltage. The Psat output power of up to +15 dBm enables the LNA to function as a LO driver for many of Hittite's balanced, I/Q or image reject mixers. The HMC772LC4 also features I/Os that are DC blocked and internally matched to 50 Ohms, making it ideal for SMT based high capacity microwave radio applications. The HMC772LC4 is housed in a RoHS compliant 4x4 mm QFN leadless ceramic package.Applications Wideband Communication Systems Surveillance Systems Point-to-Point Radio Point-to-Multi-Point Radios Military & Space Test Instrumentation

The HMC905LP3E is a SiGe BiCMOS low noise programmable frequency divider in a 3x3 mm leadless surface mount package. The circuit can be programmed to divide from N = 1 to N = 4 in the 400 MHz to 6 GHz input frequency range. The high level output power (up to 6 dBm single ended) with a very low SSB phase noise and 50% duty cycle makes this device ideal for low noise clock generation, LO generation and LO drive applications. Configurable bias and output power controls allow current consumption and output power control. The device incorporates a power down feature, good input to output isolation and fast start up time. The HMC905LP3E can be included into fast switching 'ping-pong' applications.APPLICATIONS LO Generation with Low Noise Floor Software Defined Radios Clock Generators Fast Switching Synthesizers Military Applications? Test Equipment Sensors

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

The HMC822LP6CE is a fully functioned Fractional-N Phase-Locked-Loop (PLL) Frequency Synthesizer with an Integrated Voltage Controlled Oscillator (VCO). The synthesizer consists of an integrated low noise VCO with a triband output, an autocalibration subsystem for low voltage VCO tuning, a very low noise digital Phase Detector (PD), a precision controlled charge pump, a low noise reference path divider and a fractional divider.The fractional synthesizer features an advanced delta-sigma modulator design that allows both ultra-fine step sizes and low spurious products. 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.For theory of operation and register map refer to the 'PLLs with Integrated VCO - RF VCOs' Operating Guide.Applications Cellular/4G Infrastructure Repeaters and Femtocells Communications Test Equipment CATV Equipment Phased Array Applications DDS Replacement? Very High Data Rate Radios