ADS1100

SBAS239B – MAY 2002 – REVISED NOVEMBER 2003

www.ti.com

DESCRIPTION

The ADS1100 is a precision, continuously self-calibrating

Analog-to-Digital (A/D) converter with differential inputs and

up to 16 bits of resolution in a small SOT23-6 package.

Conversions are performed ratiometrically, using the power

supply as the reference voltage. The ADS1100 uses an

power supply ranging from 2.7V to 5.5V.

The ADS1100 can perform conversions at rates of 8, 16, 32,

or 128 samples per second. The onboard Programmable

Gain Amplifier (PGA), which offers gains of up to 8, allows

smaller signals to be measured with high resolution. In

single-conversion mode, the ADS1100 automatically powers

down after a conversion, greatly reducing current consump-

tion during idle periods.

The ADS1100 is designed for applications requiring high-

resolution measurement, where space and power consump-

tion are major considerations. Typical applications include

portable instrumentation, industrial process control, and smart

transmitters.

FEATURES

q COMPLETE DATA ACQUISITION SYSTEM IN A

TINY SOT23-6 PACKAGE

q 16-BITS NO MISSING CODES

q INL: 0.0125% of FSR MAX

q CONTINUOUS SELF-CALIBRATION

q SINGLE-CYCLE CONVERSION

q PROGRAMMABLE GAIN AMPLIFIER

GAIN = 1, 2, 4, OR 8

q LOW NOISE: 4

q PROGRAMMABLE DATA RATE: 8SPS to 128SPS

q INTERNAL SYSTEM CLOCK

q POWER SUPPLY: 2.7V to 5.5V

q LOW CURRENT CONSUMPTION: 90

q AVAILABLE IN EIGHT DIFFERENT ADDRESSES

APPLICATIONS

q PORTABLE INSTRUMENTATION

q INDUSTRIAL PROCESS CONTROL

q SMART TRANSMITTERS

q CONSUMER GOODS

q FACTORY AUTOMATION

q TEMPERATURE MEASUREMENT

Copyright © 2002-2003, Texas Instruments Incorporated

Self-Calibrating, 16-Bit

ANALOG-TO-DIGITAL CONVERTER

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

∆Σ A/D

Converter

Interface

Clock

Oscillator

V

IN+

V

IN–

SCL

SDA

V

DD

GND

A = 1, 2, 4, or 8

PGA

AD0

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

All trademarks are the property of their respective owners.