GENERAL DESCRIPTION

The AD7732 is a high precision, high throughput analog front end. True 16-bit p-p resolution is achievable with a total conversion time of 500 µs (2 kHz channel switching), making it ideally suitable for high resolution multiplexing applications.

FEATURES

High resolution ADC

  24 bits no missing codes

  ±0.0015% nonlinearity

Optimized for fast channel switching

  18-bit p-p resolution (21 bits effective) at 500 Hz

  16-bit p-p resolution (19 bits effective) at 2 kHz

  14-bit p-p resolution (18 bits effective) at 15 kHz

  On-chip per channel system calibration

2 fully differential analog inputs

  Input ranges +5 V, ±5 V, +10 V, ±10 V

  Overvoltage tolerant

  Up to ±16.5 V not affecting adjacent channel

  Up to ±50 V absolute maximum

3-wire serial interface

  SPI™, QSPI™, MICROWIRE™, and DSP compatible

  Schmitt trigger on logic inputs

Single-supply operation

  5 V analog supply

  3 V or 5 V digital supply

Package: 28-lead TSSOP

APPLICATIONS

PLCs/DCS

Multiplexing applications

Process control

Industrial instrumentation