GENERAL DESCRIPTION

The AD7716 is a signal processing block for data acquisition systems. It is capable of processing four channels with bandwidths of up to 584 Hz. Resolution is 22 bits and the usable dynamic range varies from 111 dB with an input bandwidth of 36.5 Hz to 99 dB with an input bandwidth of 584 Hz.

FEATURES

22-Bit Sigma-Delta ADC

Dynamic Range of 105 dB (146 Hz Input)

±0.003 Integral Nonlinearity

On-Chip Low-Pass Digital Filter

Cutoff Programmable from 584 Hz to 36.5 Hz

Linear Phase Response

Five Line Serial I/O

Twos Complement Coding

Easy Interface to DSPs and Microcomputers

Software Control of Filter Cutoff

±5 V Supply

Low Power Operation: 50 mW

APPLICATIONS

Biomedical Data Acquisition

ECG Machines

EEG Machines

Process Control

High Accuracy Instrumentation

Seismic Systems