FEATURES
C0068 COMPLETE DATA ACQUISITION SYSTEM IN
THE MSOP-10 AND LEADLESS QFN-STYLE
PACKAGES
C0068 MEASUREMENTS FROM TWO DIFFERENTIAL
CHANNELS OR THREE SINGLE-ENDED
CHANNELS
C0068 I
2
CINTERFACE—EIGHT ADDRESSES PIN-
SELECTABLE
C0068 ONBOARD REFERENCE:
Accuracy: 2.048V ±0.05%
Drift: 5ppm/°C
C0068 ONBOARD PGA
C0068 ONBOARD OSCILLATOR
C0068 16 BITS, NO MISSING CODES
C0068 INL: 0.01% of FSR max
C0068 CONTINUOUS SELF-CALIBRATION
C0068 SINGLE-CYCLE CONVERSION
C0068 PROGRAMMABLE DATA RATE: 15SPS to
240SPS
C0068 POWER SUPPLY: 2.7V to 5.5V
C0068 LOW CURRENT CONSUMPTION: 240µA
APPLICATIONS
C0068 PORTABLE INSTRUMENTATION
C0068 INDUSTRIAL PROCESS CONTROL
C0068 SMART TRANSMITTERS
C0068 CONSUMER GOODS
C0068 FACTORY AUTOMATION
C0068 TEMPERATURE MEASUREMENT
DESCRIPTION
The ADS1112 is a precision, continuously self-calibrating
Analog-to-Digital (A/D) converter with two differential or three
single-ended channels and up to 16 bits of resolution in the
small MSOP-10 and leadless QFN-style (small-outline,
no-lead) packages. The onboard 2.048V reference provides
an input range of ±2.048V differentially. The ADS1112 uses
an I
2
C-compatible serial interface and has two address pins
that allow a user to select one of the eight I
2
C Slave
addresses. The ADS1112 operates from a single power
supply ranging from 2.7V to 5.5V.
The ADS1112 can perform conversions at rates of 15, 30, 60,
or 240 samples per second (SPS). The onboard
programmable gain amplifier (PGA), which offers gains of up
to eight, allows smaller signals to be measured with high
resolution. In single-conversion mode, the ADS1112
automatically powers down after a conversion, greatly
reducing current consumption during idle periods.
The ADS1112 is designed for applications requiring
high-resolution measurement, where space and power
consumption are major considerations. Typical applications
include portable instrumentation, industrial process control,
and smart transmitters.
All trademarks are the property of their respective owners.
ADS1112
SBAS282D − JUNE 2003 − REVISED MARCH 2004
16-Bit Analog-to-Digital Converter with
Input Multiplexer and Onboard Reference
www.ti.com
Copyright  2003−2004, Texas Instruments Incorporated
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.
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