24-Bit ADC
ADS1225 ¨
ADS1226 ¨
ADS1225 ADS1226
www.ti.com .........................................................................
Description
ADS1225 ¨
ADS1226 ¨
ADS1225 ADS1226
www.ti.com ....................................................................................................................................................... SBAS346C – MAY 2006 – REVISED JANUARY 2009
24-Bit Analog-to-Digital Converter with One- and Two-Channel Differential Inputs and Internal Oscillator
FEATURES
1
2 100SPS Data Rate (High-Speed Mode) Single-Cycle Settling Easy Conversion Control with START Pin Automatic Shutdown Low Noise: 4µVRMS Noise (High-Resolution
Mode) Input Multiplexer with Two Differential
Channels (ADS1226) Voltage Reference Supports Ratiometric
Measurements Self-Calibrating Simple Read-Only 2-Wire Serial Interface Internal High-Impedance Input Buffer Internal Temperature Sensor Internal Oscillator Low-Power: 1mW While Operating, < 1µA
During Shutdown Analog and Digital Supplies: 2.7V to 5.5V
APPLICATIONS
Hand-Held Instrumentation Portable Medical Equipment Industrial Process Control
TEMPEN
AVDD
DESCRIPTION
The ADS1225 and ADS1226 are 24-bit delta-sigma analog-to-digital (A/D) converters. They offer excellent performance, ease-of-use, and low power in a small 4mm × 4mm QFN package and are well-suited for demanding high-resolution measurements, especially in portable and other space-saving and power-constrained applications.
The ADS1225 and ADS1226 convert on command using a dedicated START pin. Simply pulse this pin to initiate a conversion. Data is read in a single cyc...
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