FEATURES

24 BITS—NO MISSING CODES

19 BITS EFFECTIVE RESOLUTION UP TO

40kHz DATA RATE

LOW NOISE: 2.5ppm

DIFFERENTIAL INPUTS

INL: 0.0015% (max)

EXTERNAL REFERENCE (0.5V to 5V)

POWER-DOWN MODE

SYNC MODE

APPLICATIONS

CARDIAC DIAGNOSTICS

DIRECT THERMOCOUPLE INTERFACES

BLOOD ANALYSIS

INFRARED PYROMETERS

LIQUID/GAS CHROMATOGRAPHY

PRECISION PROCESS CONTROL

DESCRIPTION

The ADS1252 is a precision, wide dynamic range, deltasigma,

Analog-to-Digital (A/D) converter with 24-bit resolution

operating from a single +5V supply. The delta-sigma

architecture is used for wide dynamic range and to ensure 24

bits of no missing code performance. An effective resolution

of 19 bits (2.5ppm of rms noise) is achieved for conversion

rates up to 40kHz.

The ADS1252 is designed for high-resolution measurement

applications in cardiac diagnostics, smart transmitters, industrial

process control, weight scales, chromatography, and

portable instrumentation. The converter includes a flexible,

2-wire synchronous serial interface for low-cost isolation.

The ADS1252 is a single-channel converter and is offered in

an SO-8 package.