The AD7191 is a low noise, complete analog front end for high precision measurement applications. It contains a low noise, 24-bit sigma-delta (?-?) ADC. The on-chip low noise gain stage means that signals of small amplitude can be interfaced directly to the ADC. It contains two differential analog inputs. The part also includes a temperature sensor that can be used for temperature compensation.For ease-of-use, all the features of the AD7191 are controlled by dedicated pins. The on-chip PGA has a gain of 1, 8, 64, or 128, supporting a full-scale differential input of ?5 V, ?625 mV, ?78 mV, or ?39 mV. The output data rate can be programmed to 10 Hz, 50 Hz, 60 Hz, or 120 Hz. Simultaneous 50 Hz and 60 Hz rejection is obtained when the output data rate is set to 10 Hz or 50 Hz; 60 Hz only rejection is obtained when the output data rate is set to 60 Hz. The AD7191 can be operated with the internal clock, or an external clock can be used.The part operates with a power supply of 3 V to 5.25 V. It consumes a current of 4.35 mA. It is available in a 24-lead TSSOP package.ApplicationsWeigh scalesStrain gauge transducersPressure measurementMedical and scientific instrumentation

The AD7266 is a dual, 12-bit, high speed, low power, successive approximation ADC that operates from a single 2.7 V to 5.25 V power supply and features throughput rates up to 2 MSPS. The device contains two ADCs, each preceded by a 3-channel multiplexer, and a low noise, wide bandwidth track-and-hold amplifier that can handle input frequencies in excess of 30 MHz.The conversion process and data acquisition use standard control inputs allowing easy interfacing to microprocessors or DSPs. The input signal is sampled on the falling edge of CS; conversion is also initiated at this point. The conversion time is determined by the SCLK frequency. There are no pipelined delays associated with the part.The AD7266 uses advanced design techniques to achieve very low power dissipation at high throughput rates. With 5 V supplies and a 2 MSPS throughput rate, the part consumes 6.2 mA maximum. The part also offers flexible power/throughput rate management when operating in normal mode as the quiescent current consumption is so low.The analog input range for the part can be selected to be a 0 V to VREF (or 2 ? VREF) range, with either straight binary or twos complement output coding. The AD7266 has an on-chip 2.5 V reference that can be overdriven when an external reference is preferred. This external reference range is 100 mV to VDD.PRODUCT HIGHLIGHTS Two Complete ADC Functions Allow Simultaneous Sampling and Conversion of Two Channels. Each ADC has three fully/pseudo differential pairs, or six single-ended channels, as programmed. The conversion result of both channels is simultaneously available on separate data lines, or in succession on one data line if only one serial port is available. High Throughput with Low Power Consumption. The AD7266 offers a 1.5 MSPS throughput rate with 11.4 mW maximum power dissipation when operating at 3 V. The AD7266 offers both a standard 0 V to VREF input range and a 2 ? V input range. No Pipeline Delay. The part features two standard successive approximation ADCs with accurate control of the sampling instant via a CS input and once off conversion control.

The AD7280A contains all the functions required for general-purpose monitoring of stacked lithium ion batteries as used in hybrid electric vehicles, battery backup applications, and power tools. The part has multiplexed cell voltage and auxiliary ADC measurement channels for up to six cells of battery management. An internal ?3 ppm reference is provided that allows a cell voltage accuracy of ?1.6 mV. The ADC resolution is 12 bits and allows conversion of up to 48 cells within 7 ?s.The AD7280A operates from just one VDD supply that has a range of 8 V to 30 V (with an absolute maximum rating of 33 V). The part provides six differential analog input channels to accommodate large common-mode signals across the full VDD range. Each channel allows an input signal range, VIN(+) ? VIN(?), of 1 V to 5 V. The input pins assume a series stack of six cells. In addition, the part includes six auxiliary ADC input channels that can be used for temperature measurement or system diagnostics.The AD7280A includes on-chip registers that allow a sequence of channel measurements to be programmed to suit the applications requirements.The AD7280A also includes a dynamic alert function that can detect if the cell voltages or auxiliary ADC inputs exceed an upper or lower limit defined by the user. The AD7280A has cell balancing interface outputs designed to control external FET transistors to allow discharging of individual cells.The AD7280A includes a built in self-test feature that internally applies a known voltage to the ADC inputs.There is a daisy-chain interface that allows up to eight parts to be stacked without the need for individual device isolation.The AD7280A requires only one supply pin that takes 6.5 mA under normal operation, while converting at 1 MSPS.All this functionality is provided in a 48-lead LQFP package operating over a temperature range of ?40?C to +105?C.APPLICATIONS Lithium ion battery monitoring Electric and hybrid electric vehicles Power supply back up Power tools

The AD7291 is a 12-bit, low power, 8-channel, successive approximation analog-to-digital converter (ADC) with an internal temperature sensor.The part operates from a single 3.3 V power supply and features an I2C-compatible interface. The part contains a 9-channel multiplexer and a track-and-hold amplifier than can handle frequencies up to 30 MHz. The device has an on-chip 2.5 V reference that can be disabled to allow the use of an external reference.The AD7291 provides a 2-wire serial interface compatible with I2C interfaces. The I2C interface supports standard and fast I2C interface modes. The AD7291 normally remains in a partial power-down state while not converting and powers up for conversions. The conversion process can be controlled by a command mode where conversions occur across I2C write operations or an autocycle mode selected through software control.The AD7291 includes a high accuracy band gap temperature sensor, which is monitored and digitized by the 12-bit ADC to give a resolution of 0.25?C.The AD7291 offers a programmable sequencer, which enables the selection of a preprogrammable sequence of channels for conversion.On-chip limit registers can be programmed with high and low limits for the conversion results; an out-of-range indicator output (ALERT) becomes active when the programmed high or low limits are violated by the conversion result. This output can be used as an interrupt. Product HighlightsIdeally suited to monitoring system variables in a variety of systems including telecommunications, process control, and industrial control.I2C-compatible serial interface. Standard and fast modes.Automatic partial power-down while not converting to maximize power efficiency.Channel sequencer operation.Integrated temperature sensor with 0.25?C resolution.Out of range indicator that can be software disabled or enabled.

The AD7293 is a PA drain current controller containing functionality for general-purpose monitoring and control of current, voltage, and temperature, integrated into a single chip solution with an SPI-compatible interface.The device features a 4-channel, 12-bit successive approximation register (SAR) ADC, eight 12-bit DACs (four bipolar and four unipolar with output ranges that can be configured to shut down under external pin control), a ?1.25?C accurate internal temperature sensor, and eight general-purpose input/output (GPIO) pins.The device also includes limit registers for alert functions and four high-side current sense amplifiers to measure current across external shunt resistors. These amplifiers can be optionally set to operate as part of four independent closed-loop drain current controllers.A high accuracy 2.5 V internal reference is provided to drive theDACs and the ADC. The 12-bit ADC monitors and digitizes theinternal temperature sensor, and two inputs are included for theexternal diode temperature sensors.Product Highlights Four independent closed-loop drain current controllers. Built-in monitoring, sequencing, and alert features. Compatible with both depletion mode and enhancement mode power amplifiers.Applications GaN and GaAs power amplifier monitoring and controls Base station power amplifiers General-purpose system monitoring and controls

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 AD7386/AD7387/AD7388 are 16-bit, 14-bit, and 12-bit dual, simultaneous sampling, high speed, 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 of up to 4 MSPS. The analog input types are single-ended and are sampled and converted on the falling edge of CS.The AD7386/AD7387/AD7388 have an on-chip sequencer and integrated on-chip oversampling block to improve dynamic range and reduce noise at lower bandwidths. Abuffered 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 interfacing to microprocessors or digital signal processors (DSPs). The AD7386 is compatible with 1.8 V, 2.5 V, and 3.3 V interfaces by using the separate logic supply.The AD7386/AD7387/AD7388 are available in a 16-lead LFCSP with operation specified from ?40?C to +125?C.Product Highlights 4-channel, dual simultaneous sampling ADC. Pin-compatible product family. High 4 MSPS throughput rate. Space-saving 3 mm ? 3 mm LFCSP. Integrated oversampling block to increase dynamic range and SNR and to reduce SCLK speed requirements. Single-ended analog inputs. 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 Inphase and quadrature demodulation

The AD7400A is a second-order, ?-? modulator that converts an analog input signal into a high speed, 1-bit data stream with on-chip digital isolation based on Analog Devices, Inc., iCoupler? technology. The AD7400A operates from a 5 V power supply and accepts a differential input signal of ?250 mV (?320 mV full scale). The analog input is sampled continuously by the analog modulator, eliminating the need for external sample-and-hold circuitry. The input information is contained in the output stream as a density of ones with a data rate of 10 MHz. The original information can be reconstructed with an appropriate digital filter. The serial I/O can use a 5 V or a 3 V supply (VDD2).The serial interface is digitally isolated. High speed CMOS, combined with monolithic air core transformer technology, means the on-chip isolation provides outstanding performance characteristics superior to alternatives such as optocoupler devices. The part contains an on-chip reference and has an operating temperature range of ?40?C to +125?C. The AD7400A is offered in an 8-lead surface-mount PDIP with gull wing leads and a 16-lead SOIC package.APPLICATIONS AC motor controls Shunt current monitoring Data acquisition systems Analog-to-digital and opto-isolator replacements

The AD7606C-18 is an 18-bit, simultaneous sampling, analog-to-digital data acquisition system (DAS) with eight channels. Each channel contains analog input clamp protection, a programmable gain amplifier (PGA), a low-pass filter (LPF), and an 18-bit successive approximation register (SAR) analog-to-digital converter (ADC). The AD7606C-18 also contains a flexible digital filter, a low drift, 2.5 V precision reference, a reference buffer to drive the ADC, and flexible parallel and serial interfaces.The AD7606C-18 operates from a single 5 V supply and accommodates the following input ranges when sampling at throughput rates of 1 MSPS for all channels: Bipolar single-ended: ?12.5 V, ?10 V, ?6.25 V, ?5 V, and ?2.5 V Unipolar single-ended: 0 V to 12.5 V, 0 V to 10 V, and 0 V to 5 V Bipolar differential: ?20 V, ?12.5 V, ?10 V, and ?5 VThe input clamp protection tolerates voltages up to ?21 V. The single supply operation, on-chip filtering, and high input impedance eliminate the need for external driver op amps, which require bipolar supplies. For applications with lower throughput rates, the AD7606C-18 flexible digital filter can be used to improve noise performance.In hardware mode, the AD7606C-18 is fully compatible with the AD7608 and AD7609. In software mode, the following advanced features are available: Analog input range selectable per channel with added ranges available High bandwidth mode (220 kHz) selectable per channel Additional oversampling options with an oversampling ratio up to 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 and write, cyclic redundancy check (CRC), busy stuck monitor, and reset detection)Note that throughout the 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.APPLICATIONSPower line monitoringProtective relaysMultiphase motor controlInstrumentation and control systemsData acquisition systems

The AD7606/AD7606-6/AD7606-4 are 16-bit, simultaneous sampling, analog-to-digital data acquisition systems (DAS) with eight, six, and four channels, respectively. Each part contains analog input clamp protection, a second-order antialiasing filter, a track-and-hold amplifier, a 16-bit charge redistribution successive approximation analog-to-digital converter (ADC), a flexible digital filter, a 2.5 V reference and reference buffer, and high speed serial and parallel interfaces.The AD7606/AD7606-6/AD7606-4 operate from a single 5 V supply and can accommodate ?10 V and ?5 V true bipolar input signals while sampling at throughput rates up to 200 kSPS for all channels. The input clamp protection circuitry can tolerate voltages up to ?16.5 V. The AD7606 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 AD7606/AD7606-6/AD7606-4 antialiasing filter has a 3 dB cutoff frequency of 22 kHz and provides 40 dB antialias rejection when sampling at 200 kSPS. The flexible digital filter is pin driven, yields improvements in SNR, and reduces the 3 dB bandwidth.Applications Power-line monitoring and protection systems Multiphase motor control Instrumentation and control systems Multiaxis positioning systems Data acquisition systems (DAS)