GENERAL DESCRIPTION

The AD73291 is an 8-channel, 12-bit plus sign successive approximation ADC designed on the iCMOS? (industrial CMOS) process. iCMOS is a process combining high voltage CMOS and low voltage CMOS. It enables the development of a wide range of high performance analog ICs capable of 33 V operation in a footprint that no previous generation of high voltage parts could achieve. Unlike analog ICs using conventional CMOS processes, iCMOS components can accept bipolar input signals while providing increased performance, dramatically reduced power consumption, and reduced package size.

FEATURES

12-bit plus sign SAR ADC

True bipolar input ranges

Software-selectable input ranges

±10 V, ±5 V, ±2.5 V, 0 V to +10 V

1 MSPS throughput rate

8 analog input channels with channel sequencer

Single-ended true differential and pseudo differential analog input capability

High analog input impedance

MUXOUT and ADCIN pins allow separate access to mux and ADC

Low power: 21 mW

Temperature indicator

Full power signal bandwidth: 20 MHz

Internal 2.5 V reference

High speed serial interface

iCMOS process technology

24-lead TSSOP package

Power-down modes