GENERAL DESCRIPTION

The AD76071 is a 14-bit, simultaneous sampling, analog-to-digital data acquisition system (DAS). The part contains analog input clamp protection; a second-order antialiasing filter; a track and-hold amplifier; a 14-bit charge redistribution, successive approximation analog-to-digital converter (ADC); a flexible digital filter; a 2.5 V reference and reference buffer; and high speed serial and parallel interfaces.

FEATURES

8 simultaneously sampled inputs

True bipolar analog input ranges: ±10 V, ±5 V

Single 5 V analog supply and 2.3 V to 5.25 V VDRIVE

Fully integrated data acquisition solution

Analog input clamp protection

Input buffer with 1 M? analog input impedance

Second-order antialiasing analog filter

On-chip accurate reference and reference buffer

14-bit ADC with 200 kSPS on all channels

Flexible parallel/serial interface

SPI/QSPI?/MICROWIRE?/DSP compatible

Pin-compatible solutions from 14 bits to 18 bits

Performance

7 kV ESD rating on analog input channels

Fast throughput rate: 200 kSPS for all channels

85.5 dB SNR at 50 kSPS

INL ±0.25 LSB, DNL ±0.25 LSB

Low power: 100 mW at 200 kSPS

Standby mode: 25 mW typical

64-lead LQFP package

APPLICATIONS

Power-line monitoring and protection systems

Multiphase motor control

Instrumentation and control systems

Multiaxis positioning systems

Data acquisition systems (DAS)