GENERAL DESCRIPTION

The AD7321 is a 2-channel, 12-bit plus sign successive approximation ADC designed on the iCMOS (industrial CMOS) process. iCMOS is a process combining high voltage silicon with submicron CMOS and complementary bipolar technologies. 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

500 kSPS throughput rate

Two analog input channels with channel sequencer

Single-ended, true differential, and pseudo differential analog input capability

High analog input impedance

Low power: 17 mW

Full power signal bandwidth: 22 MHz

Internal 2.5 V reference

High speed serial interface

Power-down modes

14-lead TSSOP package

iCMOS™ process technology