The AD7605-4 is a 4-channel, 16-bit, simultaneous sampling, analog-to-digital data acquisition system (DAS). The device contains analog input clamp protection, a second-order antialias-ing filter, a track-and-hold amplifier, a 16-bit charge redistribution successive approximation analog-to-digital converter (ADC), a 2.5 V reference and reference buffer, and high speed serial and parallel interfaces.The AD7605-4 operates from a single 5 V supply and can accommodate ?10 V and ?5 V true bipolar input signals while sampling at throughput rates of up to 300 kSPS for all channels. The input clamp protection circuitry can tolerate voltages up to ?16.5 V. The AD7605-4 has 1 M? analog input impedance, regardless of sampling frequency. The single-supply operation, on-chip filtering, and high input impedance eliminate the need for driver op amps and external bipolar supplies.The AD7605-4 is SPI, QSPI?, MICROWIRE?, and digital signal processor (DSP) compatible.Applications Power-line monitoring and protection systems Multiphase motor control Instrumentation and control systems Multiaxis positioning systems Data acquisition systems (DAS)

The AD7606B is a 16-bit, simultaneous sampling, analog-to-digital data acquisition system (DAS) with eight channels, each channel containing analog input clamp protection, a programable gain amplifier (PGA), a low-pass filter, and a 16-bit successive approximation register (SAR), analog-to-digital converter (ADC). The AD7606B also contains a flexible digital filter, low drift, 2.5 V precision reference and reference buffer to drive the ADC and flexible parallel and serial interfaces.The AD7606B operates from a single 5 V supply and accommodates ?10 V, ?5 V, and ?2.5 V true bipolar input ranges when sampling at throughput rates of 800 kSPS for all channels. The input clamp protection tolerates voltages up to ?21 V. The AD7606B has a 5 M? analog input impedance, resulting in less than 20 LSB bipolar zero code when the input signal is disconnected and pulled to ground through a 10 k? external resistor. The single supply operation, on-chip filtering, and high input impedance eliminates the need for external driver op amps, which require bipolar supplies. For applications with lower throughput rates, the AD7606B flexible digital filter can be used to improve noise performance.In hardware mode, the AD7606B is fully compatible with the AD7606. In software mode, the following advanced features are available: Additional ?2.5 V analog input range. Analog input range (?10 V, ?5 V, and ?2.5 V), selectable per channel. Additional oversampling (OS) options, up to OS ? 256. System gain, system offset, and system phase calibration per channel. Analog input open circuit detector. Diagnostic multiplexer. Monitoring functions (serial peripheral interface (SPI) invalid read/write, cyclic redundancy check (CRC), overvoltage and undervoltage events, busy stuck monitor, and reset detection).Note that throughout this data sheet, multifunction pins, such as the RD/SCLK pin, are referred to either by the entire pin name or by a single function of the pin, for example, the SCLK pin, when only that function is relevant.Applications Power line monitoring Protective relays Multiphase motor control Instrumentation and control systems Data acquisition systems

The AD7626 is a 16-bit, 10 MSPS, charge redistributionsuccessive approximation register (SAR) based architectureanalog-to-digital converter (ADC). SAR architecture allowsunmatched performance both in noise (91.5 dB SNR) and inlinearity (?0.45 LSB INL). The AD7626 contains a high speed,16-bit sampling ADC, an internal conversion clock, and aninternal buffered reference. On the CNV edge, it samples thevoltage difference between the IN+ and IN? pins. The voltageson these pins swing in opposite phase between 0 V and REF.The 4.096 V reference voltage, REF, can be generated internallyor applied externally.All converted results are available on a single low voltagedifferential signaling (LVDS) self clocked or echoed clock serialinterface, reducing external hardware connections.The AD7626 is housed in a 32-lead, 5 mm ? 5 mm LFCSP withoperation specified from ?40?C to +85?C.Applications Digital imaging systems ??Digital X-ray ??Digital MRI ? CCD and IR cameras High speed data acquisition High dynamic range telecommunications receivers Spectrum analysis Test equipment

The AD7655 is a low cost, simultaneous sampling, dual-channel,16-bit, charge redistribution SAR, analog-to-digital converterthat operates from a single 5 V power supply. It contains twolow noise, wide bandwidth, track-and-hold amplifiers that allowsimultaneous sampling, a high speed 16-bit sampling ADC, aninternal conversion clock, error correction circuits, and bothserial and parallel system interface ports. Each track-and-holdhas a multiplexer in front to provide a 4-channel input ADC.The A0 multiplexer control input allows the choice ofsimultaneously sampling input pairs INA1/INB1 (A0 = low) orINA2/INB2 (A0 = high). The part features a very high samplingrate mode (normal) and, for low power applications, a reducedpower mode (impulse) where the power is scaled with thethroughput. Operation is specified from ?40?C to +85?C.Product Highlights Multichannel ADC. The AD7655 features 4-channel inputs with two sample-and-hold circuits that allow simultaneous sampling. Fast Throughput. The AD7655 is a 500 kSPS, charge redistribution, 16-bit SAR ADC with internal error correction circuitry. Single-Supply Operation. The AD7655 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 arrangements are compatible with both 3 V and 5 V logic.Applications AC motor control 3-phase power control 4-channel data acquisition Uninterrupted power supplies Communications

The AD7677 is a 16-bit, 1 MSPS, charge redistribution SAR, fully differential, analog-to-digital converter that operates from a single 5 V power supply. The part contains a high speed 16-bit sampling ADC, an internal conversion clock, error correction circuits, and both serial and parallel system interface ports.The AD7677 is hardware factory calibrated and comprehensively tested to ensure such ac parameters as signal-to-noise ratio (SNR) and total harmonic distortion (THD), in addition to the more traditional dc parameters of gain, offset, and linearity.It features a very high sampling rate mode (Warp); a fast mode (Normal) for asynchronous conversion rate applications; and, for low power applications, a reduced power mode (Impulse) where the power is scaled with the throughput.The AD7677 is available in a 48-lead LQFP or a tiny 48-lead LFCSP with operation specified from ?40?C to +85?C.PRODUCT HIGHLIGHTS Excellent INL The AD7677 has a maximum integral nonlinearity of 1 LSB with a no missing 16-bit code. Superior AC Performances The AD7677 has a minimum dynamic of 92 dB, 94 dB typical. Fast Throughput The AD7677 is a 1 MSPS, charge redistribution, 16-bit SAR ADC with internal error correction circuitry. Single-Supply Operation The AD7677 operates from a single 5 V supply and typically dissipates only 115 mW. Its power dissipation decreases with the throughput. It consumes 7 ?W maximum when in power-down. Serial or Parallel Interface Versatile parallel (8 bits or 16 bits) or 2-wire serial interface arrangement compatible with both 3 V or 5 V logic.

The AD7738 is a high precision, high throughput analog front end. True 16-bit peak-to-peak resolution is achievable with a total conversion time of 117 ?s (8.5 kHz channel switching) making it ideally suitable for high resolution multiplexing applications. The AD7738 is based on a sigma-delta architecture and features up to 24 bits of no missing codes performance. The part can be configured via a simple digital interface, which allows users to balance the noise performance against data throughput up to a 15.4 kHz conversion rate. The analog front end features 8 single-ended or 4 fully differential input channels with unipolar or bipolar 625 mV, 1.25 V and 2.5V input ranges and accepts a common mode input voltage from 200 mV above AGND to AVDD-300 mV. The multiplexer output is pinned out externally allowing the user to implement programmable gain or signal conditioning before applying the input signal to the ADC. The differential reference input features ?No Reference? detect capability. The ADC also supports per channel system calibration options. The digital serial interface can be configured for three-wire operation and is compatible with microcontrollers and digital signal processors. All interface inputs are Schmitt triggered. The part is specified for operation over the extended industrial temperature range of -40?C to +105?C and is available in 28-lead TSSOP package.

The AD7739 is a high precision, high throughput analog frontend. True 16-bit p-p resolution is achievable with a totalconversion time of 250 ?s (4 kHz channel switching), making itideally suited to high resolution multiplexing applications.The part can be configured via a simple digital interface, whichallows users to balance the noise performance against datathroughput up to 15 kHz.The analog front end features eight single-ended or four fullydifferential input channels with unipolar or bipolar 625 mV,1.25 V, and 2.5 V input ranges. It accepts a common-modeinput voltage from 200 mV above AGND to AVDD ? 300 mV.The differential reference input features no-reference detectcapability. The ADC also supports per channel systemcalibration options.The digital serial interface can be configured for 3-wireoperation and is compatible with microcontrollers and digitalsignal processors. All interface inputs are Schmitt triggered.The part is specified for operation over the extended industrialtemperature range of ?40?C to +105?C.Other parts in the AD7739 family are the AD7738, AD7734,and AD7732. The AD7738 is similar to the AD7739 but has higher speed(8.5 kHz channel switching for 16-bit performance) and higherAIN leakage current. The AD7738 multiplexer output is pinnedout externally, allowing the user to implement programmablegain or signal conditioning before being applied to the ADC.The AD7734 analog front end features four single-ended inputchannels with unipolar or true bipolar input ranges to ?10 Vwhile operating from a single +5 V analog supply. The AD7734accepts an analog input overvoltage to ?16.5 V withoutdegrading the performance of the adjacent channels. The AD7732 is similar to the AD7734, but its analog front endfeatures two fully differential input channels.APPLICATIONS PLCs/DCSs Multiplexing applications Process control Industrial instrumentation

The AD7745/AD7746 are a high resolution, ?-? capacitance-to-digital converter (CDC). The capacitance to be measured is connected directly to the device inputs. The architecture fea-tures inherent high resolution (24-bit no missing codes, up to 21-bit effective resolution), high linearity (?0.01%), and high accuracy (?4 fF factory calibrated). The AD7745/AD7746 capacitance input range is ?4 pF (changing), while it can accept up to 17 pF common-mode capacitance (not changing), which can be balanced by a programmable on-chip, digital-to-capacitance converter (CAPDAC). The AD7745 has one capacitance input channel, while the AD7746 has two channels. Each channel can be configured as single-ended or differential. The AD7745/AD7746 are designed for floating capacitive sensors. For capacitive sensors with one plate connected to ground, the AD7747 is recommended. The parts have an on-chip temperature sensor with a resolution of 0.1?C and accuracy of ?2?C. The on-chip voltage reference and the on-chip clock generator eliminate the need for any external components in capacitive sensor applications. The parts have a standard voltage input, which together with the differential reference input allows easy interface to an external temperature sensor, such as an RTD, thermistor, or diode. The AD7745/AD7746 have a 2-wire, I2C-compatible serial interface. Both parts can operate with a single power supply from 2.7 V to 5.25 V. They are specified over the automotive temperature range of ?40?C to +125?C and are housed in a 16-lead TSSOP package. ApplicationsAutomotive, Industrial and Medical Systems for: Pressure Measurement Position Sensors Level Sensors Flowmeters Humidity Sensors Impurity Detection

The AD7764 is a high performance, 24-bit, sigma-delta (?-?) analog-to-digital converter (ADC). It combines wide input bandwidth, high speed, and performance of 109 dB dynamic range at a 312.5 kHz output data rate. With excellent dc specifications, the converter is ideal for high speed data acquisition of ac signals where dc data is also required.Using the AD7764 eases front-end antialias filtering requirements, simplifying the design process significantly. The AD7764 offers pin-selectable decimation rates of 64?, 128?, and 256?. Other features include an integrated buffer to drive the reference, as well as a fully differential amplifier to buffer and level shift the input to the modulator.An overrange alert pin indicates when an input signal exceeds the acceptable range. The addition of internal gain and internal overrange registers makes the AD7764 a compact, highly integrated data acquisition device requiring minimal peripheral components.The AD7764 also offers a low power mode, significantly reducing power dissipation without reducing the output data rate or available input bandwidth.The differential input is sampled at up to 40 MSPS by an analog modulator. The modulator output is processed by a series of low-pass filters. The external clock frequency applied to the AD7764 determines the sample rate, filter corner frequencies, and output word rate.The AD7764 device boasts a full band, on-board FIR filter. The full stop-band attenuation of the filter is achieved at the Nyquist frequency. This feature offers increased protection from signals that lie above the Nyquist frequency being aliased back into the input signal bandwidth.The reference voltage supplied to the AD7764 determines the input range. With a 4 V reference, the analog input range is ?3.2768 V differential, biased around a common mode of 2.048 V. This common-mode biasing is achieved using the on-chip differential amplifier, further reducing the external signal conditioning requirements.The AD7764 is available in a 28-lead TSSOP package and is specified over the industrial temperature range of ?40?C to +85?C.Applications Data acquisition systems Vibration analysis Instrumentation

The AD7767/AD7767-1/AD7767-2 are high performance, 24-bit, oversampled SAR analog-to-digital converters (ADCs). The AD7767/AD7767-1/AD7767-2 combine the benefits of a large dynamic range and input bandwidth, consuming 15 mW, 10.5 mW, and 8.5 mW power, respectively, and are contained in a 16-lead TSSOP package.Ideal for ultralow power data acquisition (such as PCI- and USB-based systems), the AD7767/AD7767-1/AD7767-2 provide 24-bit resolution. The combination of exceptional SNR, wide dynamic range, and outstanding dc accuracy make the AD7767/AD7767-1/AD7767-2 ideally suited for measuring small signal changes over a wide dynamic range. This is particularly suitable for applications where small changes on the input are measured on larger ac or dc signals. In such an application, the AD7767/AD7767-1/AD7767-2 accurately gather both ac and dc information.The AD7767/AD7767-1/AD7767-2 include an on-board digital filter (complete with linear phase response) that acts to elimi-nate out-of-band noise by filtering the oversampled input voltage. The oversampled architecture also reduces front-end antialias requirements. Other features of the AD7767 include a SYNC/PD (synchronization/power-down) pin, allowing the synchronization of multiple AD7767 devices. The addition of an SDI pin provides the option of daisy chaining multiple AD7767 devices.The AD7767/AD7767-1/AD7767-2 operate from a 2.5 V supply using a 5 V reference. The devices operate from ?40?C to +105?C.ApplicationsLow power PCI/USB data acquisition systems Low power wireless acquisition systems Vibration analysis Instrumentation High precision medical acquisition