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ADS1000
SBAS357–SEPTEMBER 2006
LOW POWER, 12-Bit ANALOG-TO-DIGITAL CONVERTER
with I2C™ INTERFACE
FEATURES
DESCRIPTION
The ADS1000 is an I2C-compatible serial interface
Analog-to-Digital (A/D) converter with differential
inputs and 12 bits of resolution in a tiny SOT23-6
package. Conversions are performed ratiometrically,
using the power supply as the reference voltage. The
ADS1000 operates from a single power supply
ranging from 2.7V to 5.5V.
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Complete 12-Bit Data Acquisition System in
a Tiny SOT-23 Package
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Low Current Consumption: Only 90µA
Integral Nonlinearity: 1LSB Max
Single-Cycle Conversion
Programmable Gain Amplifier
Gain = 1, 2, 4 or 8
The ADS1000 performs conversions at a rate of 128
samples per second (SPS). 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 ADS1000 automatically powers down after
a conversion, greatly reducing current consumption
during idle periods.
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128SPS Data Rate
I2C Interface with Two Available Addresses
Power Supply: 2.7V to 5.5V
Pin- and Software-Compatible with 16-Bit
ADS1100
APPLICATIONS
The ADS1000 is designed for applications where
space and power consumption are major
considerations. Typical applications include portable
instrumentation, consumer goods, and voltage
monitoring.
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Voltage Monitors
Battery Management
Industrial Process Control
Consumer Goods
Temperature Measurement
VDD
A = 1, 2, 4, or 8
VIN+
SCL
2
I C
A/D
PGA
Converter
Interface
VIN-
SDA
Clock
Oscillator
ADS1000
GND
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.
I2C is a trademark of Royal Philips Electronics B.V., The Netherlands.
All other 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 the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2006, Texas Instruments Incorporated