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