The AD7879/AD7889 are 12-bit successive approximationanalog-to-digital converters (SAR ADCs) with a synchronousserial interface and low on-resistance switches for driving 4-wireresistive touch screens. The AD7879/AD7889 work with a verylow power supply?a single 1.6 V to 3.6 V supply?and feature athroughput rate of 105 kSPS. The devices include a shutdownmode that reduces current consumption to less than 6 ?A.To reduce the effects of noise from LCDs and other sources, theAD7879/AD7889 contain a preprocessing block. Thepreprocessing function consists of a median filter and anaveraging filter. The combination of these two filters provides amore robust solution, discarding the spurious noise in the signaland keeping only the data of interest. The size of both filters isprogrammable. Other user-programmable conversion controlsinclude variable acquisition time and first conversion delay; upto 16 averages can be taken per conversion. The AD7879/AD7889can run in slave mode or standalone (master) mode, using anautomatic conversion sequencer and timer.The AD7879/AD7889 have a programmable pin that canoperate as an auxiliary input to the ADCs, as a battery monitor,or as a general-purpose input/output (GPIO). In addition, aprogrammable interrupt output can operate in three modes: as ageneral-purpose interrupt to signal when new data is available(DAV), as an interrupt to indicate when limits are exceeded(INT), or as a pen-down interrupt when the screen is touched(PENIRQ). The AD7879/AD7889 offer temperaturemeasurement and touch pressure measurement.The AD7879 is available in a 12-ball, 1.6 mm ? 2 mm WLCSPand in a 16-lead, 4 mm ? 4 mm LFCSP. The AD7889 is availablein a backside coated version of the WLCSP. Both devices supportan SPI interface (AD7879/AD7889) or an I2C interface (AD7879-1/AD7889-1).Applications Personal digital assistants Smart handheld devices Touch screen monitors Point-of-sale terminals Medical devices Cell phones

The AD7902 is a dual 16-bit, successive approximation, analog-to-digital converter (ADC) that operates from a single power supply, VDDx, per ADC. It contains two low power, high speed, 16-bit sampling ADCs and a versatile serial port interface (SPI). On the CNVx rising edge, the AD7902 samples an analog input, ?IN+ in the range of 0 V to VREF with respect to a ground sense, IN?. The externally applied reference voltage of the REFx pins (VREF) can be set independently from the supply voltage pins, VDDx. The power of the device scales linearly with throughput.Using the SDIx inputs, the SPI-compatible serial interface can also daisy-chain multiple ADCs on a single 3-wire bus and provide an optional busy indicator. It is compatible with 1.8 V, 2.5 V, 3 V, or 5 V logic, using the separate VIOx supplies.The AD7902 is available in a 20-lead QSOP package with operation specified from ?40?C to +125?C.APPLICATIONS Battery-powered equipment Communications Automated test equipment (ATE) Data acquisition Medical instrumentation Redundant measurement Simultaneous sampling

The AD7915/AD7916 are 16-bit, successive approximation, analog-to-digital converters (ADCs) that operate from a single power supply, VDD. They contain a low power, high speed, 16-bit sampling ADC and a versatile serial interface port. On the CNV rising edge, the AD7915/AD7916 sample the voltage difference between the IN+ and IN? pins. The voltages on these pins typically swing in opposite phases between 0 V and VREF. The reference voltage, REF, is applied externally and can be set independent of the supply voltage, VDD. The power consumption of the AD7915/AD7916 scales linearly with throughput.The AD7915/AD7916 are serial peripheral interface (SPI) compatible, which features the ability, using the SDI input, to daisy-chain several ADCs on a single 3-wire bus. They are compatible with 1.8 V, 2.5 V, 3 V, and 5 V logic using the separate VIO supply.The AD7915/AD7916 are available in a 10-lead MSOP or a 10-lead LFCSP with operation specified from ?40?C to +125?C.APPLICATIONS Automated test equipment Data acquisition systems Medical instruments Machine automation

The AD7949 is an 8-channel, 14-bit, charge redistribution successive approximation register (SAR) analog-to-digital converter (ADC) that operates from a single power supply, VDD.The AD7949 contains all components for use in a multichannel, low power data acquisition system, including a true 14-bit SAR ADC with no missing codes; an 8-channel, low crosstalk multiplexer that is useful for configuring the inputs as single-ended (with or without ground sense), differential, or bipolar; an internal low drift reference (selectable 2.5 V or 4.096 V) and buffer; a temperature sensor; a selectable one-pole filter; and a sequencer that is useful when channels are continuously scanned in order.The AD7949 uses a simple SPI interface for writing to the configuration register and receiving conversion results. The SPI interface uses a separate supply, VIO, which is set to the host logic level. Power dissipation scales with throughput.The AD7949 is housed in a tiny 20-lead LFCSP with operation specified from ?40?C to +85?C.APPLICATIONS Multichannel system monitoring Battery-powered equipment Medical instruments: ECG/EKG Mobile communications: GPS Personal digital assistants Power line monitoring Data acquisition Seismic data acquisition systems Instrumentation Process control

The AD7960 is an 18-bit, 5 MSPS charge redistribution successive approximation (SAR), analog-to-digital converter (ADC). The SAR architecture allows unmatched performance both in noise and in linearity. The AD7960 contains a low power, high speed, 18-bit sampling ADC, an internal conversion clock and an internal reference buffer. On the CNV? edge, the AD7960 samples the voltage difference between the IN+ and IN? pins. The voltages on these pins swing in opposite phase between 0 V and 4.096 V/5 V. The reference voltage is applied to the part externally. All conversion results are available on a single LVDS self-clocked or echo-clocked serial interface.The AD7960 is available in a 32-lead LFCSP (QFN) with operation specified from ?40?C to +85?C.APPLICATIONS Digital imaging systems? ?Digital X-rays? ?Computed tomography? ?IR cameras ?MRI gradient control High speed data acquisition Spectroscopy Test equipment

The AD7984 is an 18-bit, successive approximation, analog-to-digital converter (ADC) that operates from a single power supply, VDD. It contains a low power, high speed, 18-bit sampling ADC and a versatile serial interface port. On the CNV rising edge, the AD7984 samples the voltage difference between the IN+ and IN? pins. The voltages on these pins usually swing in opposite phases between 0 V and VREF. The reference voltage, REF, is applied externally and can be set independent of the supply voltage, VDD.The SPI-compatible serial interface also features the ability, using the SDI input, to daisy-chain several ADCs on a single 3-wire bus and provides an optional busy indicator. It is compatible with 1.8 V, 2.5 V, 3 V, and 5 V logic, using the separate VIO supply.The AD7984 is available in a 10-lead MSOP or a 10-lead LFCSP with operation specified from ?40?C to +85?C.Applications Automated test equipment Data acquisition systems Medical instruments Machine automation

The AD7989-1/AD7989-5 are 18-bit, successive approximation, analog-to-digital converters (ADCs) that operate from a single power supply, VDD. The AD7989-1/AD7989-5 contain a low power, high speed, 18-bit sampling ADC and a versatile serial interface port. On the CNV rising edge, the AD7989-1/AD7989-5 sample the voltage difference between the IN+ and IN? pins. The voltages on these pins typically swing in opposite phases between 0 V and VREF. The reference voltage, VREF, is applied externally and can be set independent of the supply voltage, VDD. Its power scales linearly with throughput.The AD7989-1/AD7989-5 are serial peripheral interface (SPI)-compatible, which features the ability, using the SDI/CS input, to daisy-chain several ADCs on a single 3-wire bus. The AD7989-1/AD7989-5 are compatible with 1.8 V, 2.5 V, 3 V, and 5 V logic, using the separate VIO supply.The AD7989-1/AD7989-5 are available in a 10-lead MSOP or a 10-lead LFCSP with operation specified from ?40?C to +85?C.Applications Automated test equipment Data acquisition systems Medical instruments Machine automation

The AD831 is a low distortion, wide dynamic range, monolithicmixer for use in such applications as RF to IF down conversionin HF and VHF receivers, the second mixer in DMR base stations,direct-to-baseband conversion, quadrature modulationand demodulation, and doppler-shift detection in ultrasoundimaging applications. The mixer includes an LO driverand a low-noise output amplifier and provides both user-programmablepower consumption and 3rd-order intercept point.The AD831 provides a +24 dBm third-order intercept point for-10 dBm LO power, thus improving system performance andreducing system cost compared to passive mixers, by eliminatingthe need for a high power LO driver and its attendant shieldingand isolation problems.The RF, IF, and LO ports may be dc or ac coupled when themixer is operating from ?5 V supplies or ac coupled when operatingfrom a single supply of 9 V minimum. The mixer operateswith RF and LO inputs as high as 500 MHz.The mixer's IF output is available as either a differential currentoutput or a single-ended voltage output. The differential outputis from a pair of open collectors and may be ac coupled via atransformer or capacitor to provide a 250 MHz output bandwidth.In down-conversion applications, a single capacitor connectedacross these outputs implements a low-pass filter toreduce harmonics directly at the mixer core, simplifying outputfiltering. When building a quadrature-amplitude modulator orimage reject mixer, the differential current outputs of twoAD831s may be summed by connecting them together.An integral low noise amplifier provides a single-ended voltageoutput and can drive such low impedance loads as filters, 50 Wamplifier inputs, and A/D converters. Its small signal bandwidthexceeds 200 MHz. A single resistor connected between pinsOUT and FB sets its gain. The amplifier's low dc offset allowsits use in such direct-coupled applications as direct-to-basebandconversion and quadrature-amplitude demodulation.The mixer's SSB noise figure is 10.3 dB at 70 MHz using itsoutput amplifier and optimum source impedance. Unlike passivemixers, the AD831 has no insertion loss and does not requirean external diplexer or passive termination.A programmable-bias feature allows the user to reduce powerconsumption, with a reduction in the 1 dB compression pointand third-order intercept. This permits a tradeoff between dynamicrange and power consumption. For example, the AD831may be used as a second mixer in cellular and two-way radiobase stations at reduced power while still providing a substantialperformance improvement over passive solutions.APPLICATIONS High Performance RF/IF Mixer Direct to Baseband Conversion Image-Reject Mixers I/Q Modulators and DemodulatorsPRODUCT HIGHLIGHTS ?10 dBm LO Drive for a +24 dBm Output Referred Third Order Intercept Point Single-Ended Voltage Output High Port-to-Port Isolation No Insertion Loss Single- or Dual-Supply Operation 10.3 dB Noise Figure

The AD8422 is a high precision, low power, low noise, rail-to-rail instrumentation amplifier that delivers the best performance per unit microampere in the industry. The AD8422 processes signals with ultralow distortion performance that is load independent over its full output range.The AD8422 is the third generation development of the industry standard?AD620. The AD8422 employs new process technologies and design techniques to achieve higher dynamic range and lower errors than its predecessors, while consuming less than one-third of the power. The AD8422 uses the high performance pinout introduced by the AD8221.Very low bias current makes the AD8422 error-free with high source impedance, allowing multiple sensors to be multiplexed to the inputs. Low voltage noise and low current noise make the AD8422 an ideal choice for measuring a Wheatstone bridge.The wide input range and rail-to-rail output of the AD8422 bring all of the benefits of a high performance in-amp to single-supply applications. Whether using high or low supply voltages, the power savings make the AD8422 an excellent choice for high channel count or power sensitive applications.The AD8422 uses robust input protection that ensures reliability without sacrificing noise performance. The AD8422 has high ESD immunity, and the inputs are protected from continuous voltages up to 40 V from the opposite supply rail.A single resistor sets the gain from 1 to 1000. The reference pin can be used to apply a precise offset to the output voltage.The AD8422 is specified from ?40?C to +85?C for the 8-lead MSOP and the 8-lead SOIC_N and from ?40?C to +125?C for the 8-lead LFCSP.APPLICATIONS Medical instrumentation Industrial process controls Strain gages Transducer interfaces Precision data acquisition systems Channel-isolated systems Portable instrumentation

The AD9832 is a numerically controlled oscillator employing a phase accumulator, a sine look-up table, and a 10-bit digital-to-analog converter (DAC) integrated on a single CMOS chip. Modulation capabilities are provided for phase modulation and frequency modulation.Clock rates up to 25 MHz are supported. Frequency accuracy can be controlled to one part in 4 billion. Modulation is effected by loading registers through the serial interface.A power-down bit allows the user to power down the AD9832 when it is not in use, the power consumption being reduced to 5 mW (5 V) or 3 mW (3 V). The part is available in a 16-lead TSSOP package.Applications Frequency stimulus/waveform generation Frequency phase tuning and modulation Low power RF/communications systems Liquid and gas flow measurement Sensory applications: proximity, motion, and defect detection Test and medical equipment