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ADS1224

Burr-Brown Corporation
Part Number ADS1224
Manufacturer Burr-Brown Corporation
Description 24-Bit Analog-to-Digital Converter
Published Mar 23, 2005
Detailed Description ADS1224 SBAS286A − JUNE 2003 − REVISED MARCH 2004 24ĆBit AnalogĆtoĆDigital Converter with 4ĆChannel Differential Input ...
Datasheet PDF File ADS1224 PDF File

ADS1224
ADS1224

Overview
ADS1224 SBAS286A − JUNE 2003 − REVISED MARCH 2004 24ĆBit AnalogĆtoĆDigital Converter with 4ĆChannel Differential Input Multiplexer FEATURES D 240SPS Data Rate with 4MHz Clock D 20-Bit Effective Resolution D Input Multiplexer with Four Differential D D D D D D D D D D Channels Pin-Selectable, High-Impedance Input Buffer ±5V Differential Input Range 0.
0003% INL (typ), 0.
0015% INL (max) Self-Calibrating Simple 2-Wire Serial Interface On-Chip Temperature Sensor Single Conversions with Standby Mode Low Current Consumption: 300µA Analog Supply: 2.
7V to 5.
5V Digital Supply: 2.
7V to 5.
5V DESCRIPTION The ADS1224 is a 4-channel, 24-bit, delta-sigma analog-to-digital (A/D) converter.
It offers excellent performance and low power in a TSSOP-20 package.
The ADS1224 is well-suited for demanding, high-resolution measurements, especially in portable systems and other space-saving and power-constrained applications.
A delta-sigma modulator and digital filter form the basis of the A/D converter.
The analog modulator has a ±5V differential input range.
An input multiplexer (mux) is used to select between four separate differential input channels.
A buffer can be selected to increase the input impedance of the measurement.
A simple, 2-wire serial interface provides all the necessary control.
Data retrieval, self-calibration, and Standby mode are handled with a few simple waveforms.
When only single conversions are needed, the ADS1224 can be quickly shut down (Standby mode) while idle between measurements to dramatically reduce the overall power consumption.
Multiple ADS1224s can be connected together to create a synchronously sampling multichannel measurement system.
The ADS1224 is designed to easily connect to microcontrollers, such as the MSP430.
The ADS1224 supports 2.
7V to 5.
5V analog supplies and 2.
7V to 5.
5V digital supplies.
Power is typically less than 1mW in 3V operation and less than 1µW during Standby mode.
APPLICATIONS D Hand-Held Instrumentation D Portable Medical Equip...


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