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The AD7689BCPZRL7 is an 8-channel, 16-bit, charge redistribution successive approximation register (SAR) analogue-to-digital converter (ADC). Redistributed successive approximation register (SAR) analog-to-digital converter (ADC) that operates from a single supply VDD The AD7689BCPZRL7 contains all of the components for use in a multichannel, low-power data acquisition system, including a true 16-bit SAR ADC with no missing codes; an 8-channel, low-crosstalk multiplexer for configuring the inputs as single-ended (with or without ground sense) differential or bipolar inputs; an internal low-drift reference (optionally 2.5 V or 4.096 V) and buffer; a temperature sensor; an optional unipolar filter; and a sequencer. Useful when scanning channels sequentially and continuously.The AD7689BCPZRL7 uses a simple serial port interface (SPI) for writing configuration registers and receiving conversion results.The SPI interface uses a separate power supply VIO, which is set to the host logic level. Power dissipation is proportional to throughput.

Product Attributes

Number of bits: 16

Sample rate (per second): 250k

Number of Inputs: 8

Input types: differential, pseudo-differential, single-ended

Data interface; SPI, DSP

Configuration: MUX-S/H-ADC

Ratio - S/H:ADC: 1:1

Number of A/D converters: 1

Architecture: SAR

Reference Type: External, Internal

Voltage - Supply, Analogue: 2.3V ~ 5.5V

Voltage - Supplied, Digital: 2.3V ~ 5.5V

Features: Temperature Sensor

Operating Temperature: -40°C ~ 85°C

Package/Shell: 20-WFQFN Exposed Pad, CSP

Supplier Device Package: 20-LFCSP (4x4)

Mounting Type: Surface Mount

Applications

• Multi-channel system monitoring

• Battery Powered Devices

• Medical Devices: ECG/EKG

• Mobile Communications: GPS

• Power Line Monitoring

• Data Acquisition

• Seismic Data Acquisition System

• Instrumentation

• Process Control

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