GENERAL DESCRIPTION
The AD73231 is a 4-channel, 12-bit plus sign successive approximation analog-to-digital converter (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
   Four analog input channels with channel sequencer
   Single-ended, true differential, and pseudo differential
      analog input capability
   High analog input impedance
   Low power: 18 mW
   Full power signal bandwidth: 22 MHz
   Internal 2.5 V reference
   High speed serial interface
   Power-down modes
   16-lead TSSOP package
   iCMOS process technology