1 Features

• 16-bit SAR ADC family

– ADS9327: 5MSPS/ch

– ADS9326: 3MSPS/ch

• Two differential, simultaneously sampled channels

• Supports 5V and 3.3V analog supply operation

• Excellent DC and AC performance:

– SNR: 93.2dB at 5MSPS

– INL: ±0.25LSB, DNL: ±0.2LSB

• Feature integration:

– Internal reference

– Common-mode voltage output buffer

– Integrated buffer for external reference input

– Simple data average up to 128 samples

– Moving data average up to 8 samples

• Configurable serial interface:

– 2 serial outputs for each ADC channel

– 1 serial output for each ADC channel

– 1 serial output for both ADC channels

– Supports daisy-chain functionality

• 8-bit CRC on serial interface

• Extended temperature range: –40°C to +125°C

2 Applications

• Absolute optical encoders

• Absolute magnetic encoders

• Servo drive position feedback

• Ultrasound scanners

• Programmable DC power supplies, electronic

loads

• SONAR

3 Description

The ADS932x is a high-speed, dual, simultaneoussampling,

analog-to-digital converter (ADC) with

an integrated reference and reference buffer. The

ADS932x has excellent AC performance, which

makes the device optimum for wide-bandwidth data

acquisition (DAQ) systems.

The device supports an SPI-compatible serial

interface. This interface makes the ADS932x easy to

pair with a diversity of microcontrollers, digital signal

processors (DSPs), and field-programmable gate

arrays (FPGAs). This device also supports a data

averaging feature that provides an AC performance

boost in noisy environments.