Texas Instruments ADS1112 Data Sheet / Manual
Summary
Discover the ADS1112, a high-precision, 16-bit Analog-to-Digital Converter featuring three channels and an integrated 2.048V reference. This low-power device is ideal for systems requiring exceptional measurement resolution in confined spaces. The manual provides comprehensive specifications on its serial interface, programmable gain, and operational details across various temperature ranges. Essential for engineers designing portable instrumentation, smart transmitters, industrial process control, and factory automation solutions.
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ADS1112
SBAS282D − JUNE 2003 − REVISED MARCH 2004
16-Bit Analog-to-Digital Converter with Input Multiplexer and Onboard Reference FEATURES DESCRIPTION COMPLETE DATA ACQUISITION SYSTEM IN The ADS1112 is a precision, continuously self-calibrating THE MSOP-10 AND LEADLESS QFN-STYLE Analog-to-Digital (A/D) converter with two differential or three PACKAGES single-ended channels and up to 16 bits of resolution in the
small MSOP-10 and leadless QFN-style (small-outline,
MEASUREMENTS FROM TWO DIFFERENTIAL
no-lead) packages. The onboard 2.048V reference provides
CHANNELS OR THREE SINGLE-ENDED
an input range of ±2.048V differentially. The ADS1112 uses
CHANNELS
an I2C-compatible serial interface and has two address pins
I2CINTERFACE—EIGHT ADDRESSES PIN- that allow a user to select one of the eight I2C Slave SELECTABLE addresses. The ADS1112 operates from a single power
supply ranging from 2.7V to 5.5V.
ONBOARD REFERENCE: Accuracy: 2.048V ±0.05%
The ADS1112 can perform conversions at rates of 15, 30, 60,
Drift: 5ppm/°C
or 240 samples per second (SPS). The onboard ONBOARD PGA programmable gain amplifier (PGA), which offers gains of up to eight, allows smaller signals to be measured with high
ONBOARD OSCILLATOR
resolution. In single-conversion mode, the ADS1112
16 BITS, NO MISSING CODES automatically powers down after a conversion, greatly
reducing current consumption during idle periods.
INL: 0.01% of FSR max
CONTINUOUS SELF-CALIBRATION The ADS1112 is designed for applications requiring high-resolution measurement, where space and power
SINGLE-CYCLE CONVERSION
consumption are major considerations. Typical applications
PROGRAMMABLE DATA RATE: 15SPS to include portable instrumentation, industrial process control, 240SPS and smart transmitters. POWER SUPPLY: 2.7V to 5.5V LOW CURRENT CONSUMPTION: 240µA
APPLICATIONS PORTABLE INSTRUMENTATION INDUSTRIAL PROCESS CONTROL SMART TRANSMITTERS CONSUMER GOODS FACTORY AUTOMATION TEMPERATURE MEASUREMENT
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. All trademarks are the property of their respective owners.
Copyright 2003−2004, Texas Instruments Incorporated
www.ti.com
Page Summary Contents For Texas Instruments ADS1112 Data Sheet / Manual
Manual Details
| Brand | Texas Instruments |
|---|---|
| Pages | 18 |
| File Size | 674.31 KB |
| Published | June 19, 2026 |
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Frequently Asked Questions
What is the operating voltage range for the ADS1112?
The device operates from a single power supply ranging from 2.7V to 5.5V.
How can I set or select the device's unique address?
You must use the two programmable address pins, A0 and A1, which allow selection of one of eight available addresses.
What are the supported measurement sampling rates (SPS)?
The ADS1112 supports conversion rates of 15, 30, 60, or up to 240 samples per second (SPS).
Does the device automatically conserve power when idle?
Yes, in single-conversion mode, it automatically powers down after a conversion, which greatly reduces current consumption.