ADS1100
AD0
SBAS239B – MAY 2002 – REVISED NOVEMBER 2003
Self-Calibrating, 16-Bit
ANALOG-TO-DIGITAL CONVERTER
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
µ
Vp-p
q
PROGRAMMABLE DATA RATE: 8SPS to 128SPS
q
INTERNAL SYSTEM CLOCK
q
I
2
C
TM
INTERFACE
q
POWER SUPPLY: 2.7V to 5.5V
q
LOW CURRENT CONSUMPTION: 90
µ
A
q
AVAILABLE IN EIGHT DIFFERENT ADDRESSES
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
I
2
C-compatible serial interface and operates from a single
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.
APPLICATIONS
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PORTABLE INSTRUMENTATION
q
INDUSTRIAL PROCESS CONTROL
q
SMART TRANSMITTERS
q
CONSUMER GOODS
q
FACTORY AUTOMATION
q
TEMPERATURE MEASUREMENT
I
2
C is a registered trademark of Philips Incorporated.
V
IN+
V
IN–
A = 1, 2, 4, or 8
∆Σ
A/D
Converter
SCL
SDA
V
DD
Clock
Oscillator
GND
PGA
I
2
C
Interface
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Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
All trademarks are the property of their respective owners.
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.
Copyright © 2002-2003, Texas Instruments Incorporated
www.ti.com
BURR-BROWN [ BURR-BROWN CORPORATION ]
