The AD7171 is a very low power, 16-bit, analog-to-digitalconverter (ADC). It contains a precision, 16-bit, ?-? ADC andan on-chip oscillator. Consuming only 135 ?A, the AD7171 isparticularly suitable for portable or battery operated productswhere very low power is a requirement. The AD7171 also has apower-down mode in which the device consumes 5 ?A, thusincreasing the battery life of the product.For ease of use, dedicated pins control all of the features of theAD7171. Each time a data read occurs, eight status bits areappended to the 16-bit conversion. These status bits contain apattern sequence that can be used to confirm the validity of theserial transfer.The output data rate of the AD7171 is 125 Hz, whereas the settlingtime is 24 ms. The AD7171 has one differential input and a gainof 1. This is useful in applications where the user needs to use anexternal amplifier to implement system-specific filtering or gainrequirements.The AD7171 operates with a power supply from 2.7 V to 5.25 V.It is available in a 10-lead LFCSP.The AD7170 is a 12-bit version of the AD7171. It has the samefeature set as the AD7171 and is pin-for-pin compatible.Applications Weigh scales Pressure measurement Industrial process control Portable instrumentation

The AD7192 is a low noise, complete analog front end for high precision measurement applications. It contains a low noise, 24-bit sigma-delta (?-?) analog-to-digital converter (ADC). The on-chip low noise gain stage means that signals of small amplitude can be interfaced directly to the ADC.The device can be configured to have two differential inputs or four pseudo differential inputs. The on-chip channel sequencer allows several channels to be enabled, and the AD7192 sequentially converts on each enabled channel. This simplifies communication with the part. The on-chip 4.92 MHz clock can be used as the clock source to the ADC or, alternatively, an external clock or crystal can be used. The output data rate from the part can be varied from 4.7 Hz to 4.8 kHz.The device has two digital filter options. The choice of filter affects the rms noise/noise-free resolution at the programmed output data rate, the settling time, and the 50 Hz/60 Hz rejection. For applications that require all conversions to be settled, the AD7192 includes a zero latency feature.The part operates with a power supply from 3 V to 5.25 V. It consumes a current of 4.35 mA. It is housed in a 24-lead TSSOP package.ApplicationsWeigh scalesStrain gage transducersPressure measurementPressure measurementTemperature measurementChromatographyPLC/DCS analog input modulesData acquisitionMedical and scientific instrumentation

The AD7366 / AD7367?are dual 12-bit/14-bit, high speed, low power, successive approximation analog-to-digital converters (ADCs) that feature throughput rates up to 1 MSPS. The device contains two ADCs, each preceded by a 2-channel multiplexer, and a low noise, wide bandwidth track-and-hold amplifier.The AD7366 / AD7367 are fabricated on the Analog Devices, Inc., industrial CMOS process (iCMOS), which is a technology platform combining the advantages of low and high voltage CMOS. The iCMOS process allows the AD7366 / AD7367 to accept high voltage bipolar signals in addition to reducing power consumption and package size. The AD7366 / AD7367 can accept true bipolar analog input signals in the ?10 V range, ?5 V range, and 0 V to 10 V range.The AD7366 / AD7367 have an on-chip 2.5 V reference that can be disabled to allow the use of an external reference. If a 3 V reference is applied to the DCAPA and DCAPB pins, the AD7366 / AD7367 can accept a true bipolar ?12 V analog input. Minimum ?12 V VDD and VSS supplies are required for the ?12 V input range.PRODUCT HIGHLIGHTS The AD7366/AD7367 can accept true bipolar analog input signals, as well as ?10 V, ?5 V, ?12 V (with external reference), and 0 V to 10 V unipolar signals. Two complete ADC functions allow simultaneous sampling and conversion of two channels. 1 MSPS serial interface: SPI-/QSPI-/DSP-/MICROWIRE-compatible interface.

The AD7380/AD7381 are a 16-bit and 14-bit pin-compatible family of dual simultaneous sampling, high speed, low power, successive approximation register (SAR) analog-to-digital converters (ADCs) that operate from a 3.0 V to 3.6 V power supply and feature throughput rates up to 4 MSPS. The analog input type is differential, accepts a wide common-mode input?voltage, and is sampled and converted on the falling edge of CS.An integrated on-chip oversampling block improves dynamic range and reduces noise at lower bandwidths. A buffered internal 2.5 V reference is included. Alternatively, an external?reference up to 3.3 V can be used.The conversion process and data acquisition use standard control?inputs allowing simple interfacing to microprocessors or digital signal processors (DSPs). The device is compatible with 1.8 V, 2.5 V, and 3.3 V interfaces using the separate logic supply.The AD7380/AD7381 are available in a 16-lead lead frame chip scale package (LFCSP) with operation specified from ?40?C to +125?C.Product highlights Dual simultaneous sampling and conversion with two complete ADC functions. Pin-compatible product family. High 4 MSPS throughput rate. Space saving 3 mm ? 3 mm LFCSP. An integrated oversampling block to increase dynamic range, reduce noise, and reduce SCLK speed requirements. Differential analog inputs with wide common-mode range. Small sampling capacitor reduces amplifier drive burden.Applications Motor control position feedback Motor control current sense Sonar Power quality Data acquisition systems Erbium doped fiber amplifier (EDFA) applications I and Q demodulation

The AD7441?/ AD7451 are, respectively, 10-/12-bit high speed, low power, single-supply, successive approximation (SAR), analog-to-digital converters (ADCs) that feature a pseudo differential analog input. These parts operate from a single 2.7 V to 5.25 V power supply and achieve very low power dissipation at high throughput rates of up to 1 MSPS.The AD7441 / AD7451 contain a low noise, wide bandwidth, differential track-and-hold (T/H) amplifier that handles input frequencies up to 3.5 MHz. The reference voltage for these devices is applied externally to the VREF pin and can range from 100 mV to VDD, depending on the power supply and what suits the application.The conversion process and data acquisition are controlled using overbar: CS and the serial clock, allowing the device to interface with microprocessors or DSPs. The input signals are sampled on the falling edge of overbar: CS when the conversion is initiated. The SAR architecture of these parts ensures that there are no pipeline delays.PRODUCT HIGHLIGHTS Operation with 2.7 V to 5.25 V Power Supplies. High Throughput with Low Power Consumption. With a 3 V supply, the AD7441 / AD7451 offer 4 mW maxi-mum power consumption for a 1 MSPS throughput rate. Pseudo Differential Analog Input. Flexible Power/Serial Clock Speed Management. The conversion rate is determined by the serial clock, allowing the power to be reduced as the conversion time is reduced through the serial clock speed increase. These parts also feature a shutdown mode to maximize power efficiency at lower throughput rates. Variable Voltage Reference Input. No Pipeline Delays. Accurate Control of Sampling Instant via overbar: CS Input and Once-Off Conversion Control. ENOB > 10 Bits Typically with 500 mV Reference.APPLICATIONS Transducer interface Battery-powered systems Data acquisition systems Portable instrumentation

The AD7667 is a 16-bit, 1 MSPS, charge redistribution SARanalog-to-digital converter that operates from a single 5 Vpower supply. The part contains a high speed 16-bit samplingADC, an internal conversion clock, internal reference, errorcorrection circuits, and both serial and parallel system interface ports. It features a very high sampling rate mode (Warp), afast mode (Normal) for asynchronous applications, and areduced power mode (Impulse) for low power applicationswhere power is scaled with the throughput. The AD7667 ishardware factory-calibrated and comprehensively tested toensure ac parameters such as signal-to-noise ratio (SNR) andtotal harmonic distortion (THD) in addition to the moretraditional dc parameters of gain, offset, and linearity. Operationis specified from ?40?C to +85?C. PRODUCT HIGHLIGHTS Fast Throughput. The AD7667 is a 1 MSPS, charge redistribution, 16-bit SAR ADC with internal error correction circuitry. Superior INL. The AD7667 has a maximum integral nonlinearity of 2.0 LSBs with no missing 16-bit codes. Internal Reference. The AD7667 has an internal reference with a typical temperature drift of 3 ppm/?C. Single-Supply Operation. The AD7667 operates from a single 5 V supply. In Impulse mode, its power dissipation decreases with throughput. Serial or Parallel Interface. Versatile parallel or 2-wire serial interface arrangement is compatible with both 3 V and 5 V logic. APPLICATIONS Data Acquisition Instrumentation Digital Signal Processing Spectrum Analysis Medical Instruments Battery-Powered Systems Process Control

The AD7682/AD7689 are 4-channel/8-channel, 16-bit, charge redistribution successive approximation register (SAR) analog-to-digital converters (ADCs) that operate from a single power supply, VDD.The AD7682/AD7689 contain all components for use in a multichannel, low power data acquisition system, including a true 16-bit SAR ADC with no missing codes; a 4-channel (AD7682) or 8-channel (AD7689) 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 AD7682/AD7689 use a simple serial port interface (SPI) 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 AD7682/AD7689 are housed in a tiny 20-lead lead frame?chip scale package (LFCSP) and 20-lead wafer level chip scale?package (WLCSP) with operation specified from ?40?C to?+85?C. The AD7689 includes an extended temperature range?model with specifications guaranteed to a maximum?temperature (TMAX) of +125?C.APPLICATIONS Multichannel system monitoring Battery-powered equipment Medical instruments: ECG/EKG Mobile communications: GPS Power line monitoring Data acquisition Seismic data acquisition systems Instrumentation Process control

The AD7693 is a 16-bit, successive approximation analog-to-digital converter (ADC) that operates from a single power supply, VDD. It contains a low power, high speed, 16-bit sampling ADC with no missing codes, an internal conversion clock, and a versatile serial interface port. The reference voltage, VREF, is applied externally and can be set up to the supply voltage, VDD. On the CNV rising edge, it samples the voltage difference between the IN+ and IN? pins. The voltages on these pins swing in opposite phase between 0 V and VREF about VREF/2. Its power scales linearly with throughput.Using the SDI input, the SPI-compatible serial interface also features the ability 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, or 5 V logic, using the separate VIO supply.The AD7693 is housed in a 10-lead MSOP with operation specified from ?40?C to +85?C.APPLICATIONS Battery-powered equipment Data acquisitions Seismic data acquisition systems DVMs Instrumentation Medical instruments

The AD7719 is a complete analog front-end for low frequency measurement applications. It contains two high-resolution sigma delta ADCs, switchable matched excitation current sources, low-side power switches, digital I/O port and temperature sensor. The 24-bit mainchannel with PGA accepts fully differential, unipolar and bipolar input signal ranges from REFIN1/128 to REFIN1. Signals can be converted directly from a transducer without the need for signal conditioning. The 16-bit aux channel does not have a PGA and has an input signal range of REFIN2 or REFIN2/2.

The AD7730 is a complete analog front end for weigh-scale and pressure measurement applications. The device accepts low-level signals directly from a transducer and outputs a serial digital word. The input signal is applied to a proprietary programmable gain front end based around an analog modulator.The modulator output is processed by a low pass programmable digital filter, allowing adjustment of filter cutoff, output rate and settling time.The part features two buffered differential programmable gain analog inputs as well as a differential reference input. The part operates from a single +5 V supply. It accepts four unipolar analog input ranges: 0 mV to ?10 mV, +20 mV, +40 mV and +80 mV and four bipolar ranges: ?10 mV, ?20 mV, ?40 mV and ?80 mV. The peak-to-peak resolution achievable directly from the part is 1 in 230,000 counts. An on-chip 6-bit DAC allows the removal of TARE voltages. Clock signals for synchronizing ac excitation of the bridge are also provided.The serial interface on the part can be configured for three-wire operation and is compatible with microcontrollers and digital signal processors. The AD7730 contains self-calibration and system calibration options, and features an offset drift of less than 5 nV/?C and a gain drift of less than 2 ppm/?C.The part is available in a 24-pin plastic DIP, a 24-lead SOIC and 24-lead TSSOP package.APPLICATIONS Weigh Scales Pressure Measurement