Product Summary

The ADS1222 is a 2-channel, 24-bit, delta-sigma analog-to-digital (A/D) converter. It offers excellent performance and low power in a TSSOP-14 package. The ADS1222 is well-suited for demanding, high-resolution measurements, especially in portable systems and other space-saving and power-constrained applications.A simple, 2-wire serial interface provides all thenecessary control. Data retrieval, self-calibration, and Standby mode are handled with a few simple waveforms. The applications of the ADS1222 are Hand-Held Instrumentation, Portable Medical Equipment, Industrial Process Control, Weigh Scales.

Parametrics

ADS1222 absolute maximum ratings: (1)VDD to GND:-0.3V to +6V; (2)Input current: 100mA, momentary; (3)Input current: 10mA, continuous; (4)Analog input voltage to GND: -0.3V to VDD + 0.3V; (5)Digital input voltage to GND:-0.3V to VDD + 0.3V; (6)Maximum Junction Temperature:+150℃; (7)Operating Temperature Range:-55℃ to +125℃; (8)Storage Temperature Range:-60℃ to +150℃; (9)Lead Temperature (soldering, 10s):+300℃.

Features

ADS1222 features: (1)240SPS Data Rate with 4MHz Clock; (2)20-Bit Effective Resolution; (3)Input Multiplexer with Two Differential Channels; (4)Pin-Selectable, High-Impedance Input Buffer; (5)±5V Differential Input Range; (6)0.0003% INL (typ), 0.0015% INL (max); (7)Self-Calibrating; (8)Simple 2-Wire Serial Interface; (9)On-Chip Temperature Sensor; (10)Single Conversions with Standby Mode; (11)Low Current Consumption: 300μA; (12)Analog Supply: 2.7V to 5.5V.

Diagrams

ADS1222 block diagram

Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
ADS1222IPW
ADS1222IPW

Other


Data Sheet

Negotiable 
ADS1222IPWRG4
ADS1222IPWRG4

Texas Instruments

ADC (A/D Converters) 24-Bit Conv w/2-Ch Diff Input Mltplxer

Data Sheet

0-1605: $1.99
1605-2000: $1.99
ADS1222IPWTG4
ADS1222IPWTG4

Texas Instruments

ADC (A/D Converters) 24-Bit Conv w/2-Ch Diff Input Mltplxer

Data Sheet

0-1: $4.59
1-10: $4.12
10-25: $3.67
25-50: $3.46
ADS1222IPWT
ADS1222IPWT

Texas Instruments

ADC (A/D Converters) 24-Bit Conv w/2-Ch Diff Input Mltplxer

Data Sheet

0-1: $4.59
1-10: $4.12
10-25: $3.67
25-50: $3.46
ADS1222
ADS1222

Other


Data Sheet

Negotiable 
ADS1222IPWR
ADS1222IPWR

Texas Instruments

ADC (A/D Converters) 24-Bit Conv w/2-Ch Diff Input Mltplxer

Data Sheet

0-1605: $1.99
1605-2000: $1.99