EmbeddedRelated.com
    Parts   Interface ICs  ADC & DAC    TI ADS1115 / ADS1118 ADC Family    ADS1220IPWR    ADS1220IPWR
ADS1220IPWR

TIADS1220IPWR

Texas Instruments
24 Bit Analog to Digital Converter 2, 4 Input 1 Sigma-Delta 16-TSSOP
NRND5,725 in stock
Datasheet Digi-Key Mouser Compare Prices

Overview

The ADS1220IPWR is a highly integrated, 24-bit sigma-delta analog-to-digital converter designed for high-precision measurement of small-signal sensors. It features a flexible input multiplexer supporting four single-ended or two differential inputs, a low-noise programmable gain amplifier (PGA), and two programmable excitation current sources for resistive sensors.

Why Choose This Part

This ADC significantly reduces BOM complexity by integrating a low-drift 2.048V internal reference, an oscillator, and a precision temperature sensor for cold-junction compensation. Its ability to operate down to 2.3V with a power-down current of 0.4uA makes it excellent for battery-powered remote sensing applications.

Applications

Temperature Measurement
Ideal for RTD, thermocouple, and thermistor measurements using the integrated PGA and excitation currents.
Bridge Sensor Interface
Precision digitization for pressure sensors and strain gauges in industrial weighing scales.
Portable Instrumentation
Suitability for handheld devices due to low 120uA typical current consumption and duty-cycle mode.
Factory Automation
Robust sensor monitoring in PLC analog input modules and process control systems.

Key Specifications

Features PGA, Temperature Sensor
Input Type Differential, Single Ended
Architecture Sigma-Delta
Configuration MUX-PGA-ADC
Mounting Type Surface Mount
Data Interface SPI
Number of Bits 24
Package / Case 16-TSSOP (0.173", 4.40mm Width)
Reference Type External, Internal, Supply
Number of Inputs 2, 4
Operating Temperature -40degC ~ 125degC
Supplier Device Package 16-TSSOP
Number of A/D Converters 1
Voltage - Supply, Analog 2.3V ~ 5.5V, +/-2.5
Voltage - Supply, Digital 2.3V ~ 5.5V
Sampling Rate (Per Second) 2k

Getting Started

Start development using the ADS1220EVM evaluation module to test performance via a PC interface. For software implementation, configure the 4-wire SPI interface and utilize the internal low-side switch to disconnect bridge sensors during idle periods to save power.

Categories

Interface ICs > ADC & DAC