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 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 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 AD7785 is a low power, low noise, complete analog front ends for high precision measurement applications. It contains a low noise 20-bit ?-? ADC with three differential analog inputs. The on-chip, low noise instrumentation amplifier means that signals of small amplitude can be interfaced directly to the ADC. With a gain setting of 64, the rms noise is 40 nV when the update rate equals 4.17 Hz.The device contains a precision low noise, low drift internal band gap reference and can also accept an external differential reference. Other on-chip features include programmable excitation current sources, burnout currents, and a bias voltage generator, the bias voltage generator being used to set the common-mode voltage of a channel to AVDD/2.The device can be operated with either the internal clock or an external clock. The output data rate from the part is software-programmable and can be varied from 4.17 Hz to 470 Hz.The part operates with a power supply from 2.7 V to 5.25 V. It consumes a current of 400 ?A typical and is housed in 16-lead TSSOP packages.APPLICATIONS Thermocouple measurements RTD measurements Thermistor measurements Gas analysis Industrial process control Instrumentation Portable instrumentation Blood analysis Smart transmitters Liquid/gas chromatography 6-digit DVM

The AD7796/AD7797 are complete, analog front ends for highprecision, bridge sensor applications such as weigh scales. TheAD7796/AD7797 contain a ?-? ADC capable of 16-/24-bitresolution, respectively. The on-chip instrumentation amplifierhas a fixed gain of 128, allowing small amplitude signals such asthose from bridge sensors to be directly interfaced to the ADC.Each device has one differential input and contains a temperaturesensor that is internally connected to the ADC. This sensor canbe used to perform temperature compensation of the bridge.The devices can be operated with the internal clock or an externalclock. The output data rate from the devices is software-programmableand can be varied from 4.17 Hz to 123 Hz.The AD7796/AD7797 operate with a power supply from 2.7 Vto 5.25 V. Each device consumes a current of 250 ?A typical andis housed in a 16-lead TSSOP.Applications Weigh scales Strain gages Industrial process control Instrumentation Portable instrumentation

The?AD7798/AD7799 are low power, low noise, complete analog front ends for high precision measurement applications. The AD7798/AD7799 contains a low noise, 16-/24-bit ?-? ADC with three differential analog inputs. The on-chip, low noise instrumentation amplifier means that signals of small amplitude can be interfaced directly to the ADC. With a gain setting of 64, the rms noise is 27 nV for the AD7799 and 40 nV for the AD7798 when the update rate equals 4.17 Hz.On-chip features include a low-side power switch, reference detect, programmable digital output pins, burnout currents, and an internal clock oscillator. The output data rate from the part is software-programmable and can be varied from 4.17 Hz to 470 Hz.The part operates with a power supply from 2.7 V to 5.25 V. The AD7798 consumes a current of 300 ?A typical, whereas the AD7799 consumes 380 ?A typical. Both devices are housed in a 16-lead TSSOP package.Applications Weigh scales Pressure measurement Strain gauge transducers Gas analysis Industrial process control Instrumentation Portable instrumentation Blood analysis Smart transmitters Liquid/gas chromotography 6-digit DVM

DC751A-G: Demo Board for the LTC2232 10-Bit, 105Msps ADCs.

DC778A: Demo Board for the LTC2602 - Dual 16-Bit Rail-to-Rail DACs in 8-Lead MSOP.