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GENERAL DESCRIPTION

The AD7656/AD7657/AD76581 contain six 16-/14-/12-bit, fast, low power, successive approximation ADCs all in the one package that is designed on the iCMOS? process (industrial CMOS). 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, which dramatically reduces power consumption and package size.

FEATURES

6 independent ADCs

True bipolar analog inputs

Pin-/software-selectable ranges: ±10 V, ±5 V

Fast throughput rate: 250 kSPS

iCMOS process technology

Low power 140 mW at 250 kSPS with 5 V supplies

Wide input bandwidth 86.5 dB SNR at 50 kHz input frequency

On-chip reference and reference buffers

Parallel, serial, and daisy-chain interface modes

High speed serial interface SPI-/QSPI?-/MICROWIRE?-/DSP-compatible

Standby mode: 100 μW maximum

64-lead LQFP

APPLICATIONS

Power line monitoring systems

Instrumentation and control systems

Multi-axis positioning systems