Texas Instruments ADS1222 24-Bit Analog-to-Digital Converter Datasheet

This datasheet provides detailed information about the ADS1222, including features, applications, and descriptions.

Brand: Texas Instruments
Category: Data Converters
Document type: Datasheet
Language: English
Pages: 21
File format: PDF
File size: 232 KB
Published: 08 August, 2012
Updated: 30 September, 2023
MD5 checksum: 50C580C78F2FDF2818D305ED58433D6B
PDF: Texas Instruments ADS1222 24-Bit Analog-to-Digital Converter Datasheet PDF

About this manual

The ADS1222 is a 2-channel, 24-bit, delta-sigma analog-to-digital converter designed for high-resolution measurements in portable systems and space-constrained applications. It features a delta-sigma modulator and digital filter with a +5V differential input range and an input multiplexer to select between two separate differential input channels.

The device offers a simple 2-wire serial interface for data retrieval, self-calibration, and standby mode control. It supports analog supply voltages from 2.7V to 5.5V with low current consumption, making it suitable for hand-held instrumentation, portable medical equipment, and industrial process control.

What's inside

Features
Applications
Description
Ordering Information
Absolute Maximum Ratings
Electrical Characteristics
Pin Assignments
Typical Characteristics

Specifications

Resolution	24 Bits
Data rate	120 sps
Integral nonlinearity (INL)	0.0003% (typ)
Analog Supply Voltage	2.7V to 5.5V
Low Current Consumption	300uA
Operating Temperature Range	-40°C to +85°C

Frequently asked questions

What is the effective resolution of the ADS1222?

The ADS1222 offers 20-bit effective resolution.

How many analog input channels does the ADS1222 support?

The device supports two differential input channels via an input multiplexer.

What is the typical power consumption in normal mode with the buffer off?

The typical VDD current is 300uA when the buffer is off.

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