The HMC792ALP4E is a broadband 6-bit GaAs IC Digital Attenuator in a low cost leadless SMT package. This versatile digital attenuator incorporates off-chip AC ground capacitors for near DC operation, making it suitable for a wide variety of RF and IF applications. The dual mode control interface is CMOS/TTL compatible, and accepts either a three wire serial input or a 6 bit parallel word. The HMC792ALP4E also features a user selectable power up state and a serial output port for cascading other Hittite serial controlled components. The HMC792ALP4E is housed in a RoHS compliant 4x4 mm QFN leadless package, and requires no external matching components.Applications Cellular/3G infrastructure WiBro / WiMAX / 4G Microwave radio & VSAT Test equipment and sensors IF & RF applications

The AD74412R is a quad-channel software configurable input/output solution for building and process control applications. The AD74412R contains functionality for analog output, analog input, digital input, and resistance temperature detector (RTD) measurements integrated into a single chip solution with an interface compatible with the serial port interface (SPI).The device features a 16-bit, ?-? analog-to-digital converter (ADC) and four configurable, 13-bit digital-to-analog converters (DACs) to provide four configurable input/output channels and a suite of diagnostic functions.There are several modes related to the AD74412R. These modes are voltage output, current output, voltage input, externally powered current input, loop powered current input, external RTD measurement, digital input logic, and loop powered digital input.The AD74412R contains a high accuracy 2.5 V internal reference to drive the DACs and the ADC.Product Highlights Quad-Channel, Software Configurable Channels. Built In Diagnostics and Alert Features. Robust Architecture. Surge tested to ?1 kV, per the IEC61000-4-5 standard, on the input/output terminals with unshielded cables.?Applications? Building control systems Process control Industrial automation ?

The HMC1055 is a low cost, gallium arsenide (GaAs), single-pole,single-throw (SPST) switch in a surface-mount LFCSPpackage. This switch offers low insertion loss, high isolation,and exceptional third-order intermodulation performance thatmake it ideal for many cellular and wireless infrastructureapplications from 0.5 GHz to 4.0 GHz.The HMC1055 operates with single positive supply voltage anda single positive control voltage at very low dc currents. RF1 isreflective open, whereas RF2 is terminated to 50 ? in the offstate.APPLICATIONS Cellular infrastructure Wireless infrastructure Mobile radios Test equipment

The HMC832LP6GE is a 3.3 V, high performance, wide-band, Fractional-N Phase-Locked-Loop (PLL) that features an integrated Voltage Controlled Oscillator (VCO) with a fundamental frequency of 1500 MHz - 3000 MHz, and an integrated VCO Output Divider (divide by 1/2/4/6.../60/62), that enables the HMC832LP6GE to generate continuous frequencies from 25 MHz to 3000 MHz. The integrated Phase Detector (PD) and delta-sigma modulator, capable of operating at up to 100 MHz, permit wider loop-bandwidths and faster frequency tuning, with excellent spectral performance.Industry leading phase noise and spurious performance, across all frequencies, enable the HMC832LP6GE to minimize blocker effects, improve receiver sensitivity and transmitter spectral purity. Low noise floor (-160 dBc/Hz) eliminates any contribution to modulator/mixer noise floor in transmitter applications.The HMC832LP6GE features all 3.3 V supply and an innovative Programmable Performance technology that enables the HMC832LP6GE to tailor current consumption and corresponding noise floor performance to each individual application by selecting either a low current consumption mode, or a high performance mode for an improved noise floor performance.Additional features of the HMC832LP6GE include 12 dB of RF output gain control in 1 dB steps; Output Mute function to automatically mute the output during frequency changes when the device is not locked; Selectable resistance for better output return loss; Programmable differential or single-ended outputs, with the ability to select either output in single-ended mode; and a delta-sigma modulator Exact Frequency Mode which enables users to generate output frequencies with 0 Hz frequency error.Applications Cellular Infrastructure Microwave Radio WiMax, WiFi Communications Test Equipment CATV Equipment DDS Replacement Military Tunable Reference Source for?Spurious- Free Performance

The AD5122/AD5142 potentiometers provide a nonvolatile solution for 128-/256-position adjustment applications, offeringguaranteed low resistor tolerance errors of ?8% and up to ?6 mA current density in the Ax, Bx, and Wx pins.The low resistor tolerance and low nominal temperature coefficient simplify open-loop applications as well as applications requiringtolerance matching.The linear gain setting mode allows independent programming of the resistance between the digital potentiometer terminalsthrough the RAW and RWB string resistors, allowing accurate resistor matching.The high bandwidth and low total harmonic distortion (THD) ensure optimal performance for ac signals, making these devicessuitable for filter design.The low wiper resistance of only 40 ? at the ends of the resistor array allows for pin to pin connection.The wiper values can be set through an SPI-compatible digital interface that also reads back the wiper register and EEPROMcontents.The AD5122/AD5142 is available in a compact, 16-lead, 3 mm ? 3 mm LFCSP and a 16-lead TSSOP. The parts are guaranteed tooperate over the extended industrial temperature range of ?40?C to +125?C. Applications Portable electronics level adjustment LCD panel brightness and contrast controls Programmable filters, delays, and time constants Programmable power supplies

The AD5232 device provides a nonvolatile, dual-channel, digitally controlled variable resistor (VR) with 256-position resolution. This device performs the same electronic adjustment function as a mechanical potentiometer with enhanced resolution, solid state reliability, and superior low temperature coefficient performance. The versatile programming of the AD5232, performed via a microcontroller, allows multiple modes of operation and adjustment.In the direct program mode, a predetermined setting of the RDAC registers (RDAC1 and RDAC2) can be loaded directly from the microcontroller. Another important mode of operation allows the RDACx register to be refreshed with the setting previously stored in the corresponding EEMEM register (EEMEM1 and EEMEM2). When changes are made to the RDACx register to establish a new wiper position, the value of the setting can be saved into the EEMEMx register by executing an EEMEM save operation. After the settings are saved in the EEMEMx register, these values are automatically transferred to the RDACx register to set the wiper position at system power-on. Such operation is enabled by the internal preset strobe. The preset strobe can also be accessed externally.All internal register contents can be read via the serial data output (SDO). This includes the RDAC1 and RDAC2 registers, the corresponding nonvolatile EEMEM1 and EEMEM2 registers, and the 14 spare USER EEMEM registers that are available for constant storage.The basic mode of adjustment is the increment and decrement command instructions that control the wiper position setting register (RDACx). An internal scratch pad RDACx register can be moved up or down one step of the nominal resistance between Terminal A and Terminal B. This step adjustment linearly changes the wiper to Terminal B resistance (RWB) by one position segment of the device?s end-to-end resistance (RAB). For exponential/ logarithmic changes in wiper setting, a left/right shift command instruction adjusts the levels in ?6 dB steps, which can be useful for audio and light alarm applications.The AD5232 is available in a thin, 16-lead TSSOP package. All parts are guaranteed to operate over the extended industrial temperature range of ?40?C to +85?C. An evaluation board, the EVAL-AD5232-10EBZ, is available.APPLICATIONS Mechanical potentiometer replacement Instrumentation: gain and offset adjustment Programmable voltage-to-current conversion Programmable filters, delays, and time constants Programmable power supply Low resolution DAC replacement Sensor calibration

The AD5245 provides a compact 2.9 mm ? 3 mm packaged solution for 256-position adjustment applications. These devices perform the same electronic adjustment function as mechanical potentiometers or variable resistors, with enhanced resolution, solid-state reliability, and superior low temperature coefficient performance.The wiper settings are controllable through an I2C-compatible digital interface, which can also be used to read back the wiper register content. AD0 can be used to place up to two devices on the same bus. Command bits are available to reset the wiper position to midscale or to shut down the device into a state of zero power consumption.Operating from a 2.7 V to 5.5 V power supply and consuming less than 8 ?A allows usage in portable battery-operated applications.Note that the terms digital potentiometer, VR, and RDAC are used interchangeably.APPLICATIONS Mechanical potentiometer replacement in new designs LCD panel VCOM adjustment LCD panel brightness and contrast control Transducer adjustment of pressure, temperature, position, chemical, and optical sensors RF amplifier biasing Automotive electronics adjustment Gain control and offset adjustment

The AD5253?/ AD5254?are quad-channel, I2C, nonvolatile memory, digitally controlled potentiometers with 64/256 positions, respectively. These devices perform the same electronic adjustment functions as mechanical potentiometers, trimmers, and variable resistors.The parts? versatile programmability allows multiple modes of operation, including read/write access in the RDAC and EEMEM registers, increment/decrement of resistance, resistance changes in ?6 dB scales, wiper setting readback, and extra EEMEM for storing user-defined information, such as memory data for other components, look-up table, or system identification information.The AD5253 / AD5254?allow the host I2C controllers to write any of the 64-/256-step wiper settings in the RDAC registers and store them in the EEMEM. Once the settings are stored, they are restored automatically to the RDAC registers at system power-on; the settings can also be restored dynamically.The AD5253 / AD5254?provide additional increment, decrement, +6 dB step change, and ?6 dB step change in synchronous or asynchronous channel update mode. The increment and decrement functions allow stepwise linear adjustments, with a ? 6 dB step change equivalent to doubling or halving the RDAC wiper setting. These functions are useful for steep-slope, nonlinear adjustments, such as white LED brightness and audio volume control.The AD5253 / AD5254?have a patented resistance-tolerance storing function that allows the user to access the EEMEM and obtain the absolute end-to-end resistance values of the RDACs for precision applications.The AD5253 / AD5254?are available in TSSOP-20 packages in 1 k?, 10 k?, 50 k?, and 100 k? options. All parts are guaranteed to operate over the ?40?C to +105?C extended industrial temperature range. In this data sheet, the nonvolatile memory and EEMEM terms are used interchangeably, as are the digital potentiometer and RDAC terms.APPLICATIONS Mechanical potentiometer replacement Low resolution DAC replacement RGB LED backlight control White LED brightness adjustment RF base station power amp bias control Programmable gain and offset control Programmable attenuators Programmable voltage-to-current conversion Programmable power supply Programmable filters Sensor calibrations

The AD7276 / AD7277?/ AD7278?is a 12-bit, high speed, low power, successive approximation analog-to-digital converters (ADCs). The parts operate from a single 2.35 V to 3.6 V power supply and feature throughput rates of up to 3 MSPS. The parts contain a low noise, wide bandwidth track-and-hold amplifier that can handle input frequencies in excess of 55 MHz.The conversion process and data acquisition are controlled using CS and the serial clock, allowing the devices to interface with microprocessors or DSPs. The input signal is sampled on the falling edge of CS, and the conversion is also initiated at this point. There are no pipeline delays associated with the part.The AD7276 / AD7277 / AD7278 uses advanced design techniques to achieve very low power dissipation at high throughput rates. The reference for the part is taken internally from VDD. This allows the widest dynamic input range to the ADC; therefore, the analog input range for the part is 0 to VDD. The conversion rate is determined by the SCLKPRODUCT HIGHLIGHTS 3 MSPS ADCs in a 6-lead TSOT package AD7276 / AD7277 / AD7278 and AD7476A?/ AD7477A?/ AD7478A?pin-compatible High throughput with low power consumption Flexible power/serial clock speed management. This allows maximum power efficiency at low throughput rates Reference derived from the power supply No pipeline delay. The parts feature a standard successive approximation ADC with accurate control of the sampling instant via a CS input and once-off conversion control.

The AD7292 contains all the functionality required for general-purpose monitoring of analog signals and control of external devices, integrated into a single-chip solution. The AD7292 features an 8-channel, 10-bit SAR ADC, four 10-bit DACs, a ?1?C accurate internal temperature sensor, and 12 GPIOs to aid system monitoring and control.The 10-bit, high speed, low power successive approximation register (SAR) ADC is designed to monitor a variety of single-ended input signals. Differential operation is also available by configuring VIN0 and VIN1 to operate as a differential pair.The AD7292 offers a register programmable ADC sequencer, which enables the selection of a programmable sequence of channels for conversion.Four 10-bit digital-to-analog converters (DACs) provide outputs from 0 V to 5 V. An internal, high accuracy, 1.25 V reference provides a separately buffered reference source for both the ADC and the DACs.A high accuracy band gap temperature sensor is monitored and digitized by the 10-bit ADC to give a resolution of 0.03125?C. The AD7292 also features built-in limit and alarm functions.The AD7292 is a highly integrated solution offered in a 36-lead LFCSP package with an operating temperature range of ?40?C to +125?C.APPLICATIONS Base Station Power Amplifier (PA) Monitoring and Control RF Control Loops Optical Communication System Control General-Purpose System Monitoring and Control