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ADS1220IRVAR

TIADS1220IRVAR

Texas Instruments
24 Bit Analog to Digital Converter 2, 4 Input 1 Sigma-Delta 16-VQFN (3.5x3.5)
Active6,798 in stock
Datasheet Digi-Key Compare Prices

Overview

The ADS1220IRVAR is a precision 24-bit delta-sigma analog-to-digital converter (ADC) featuring an integrated programmable gain amplifier (PGA) and a low-drift voltage reference. It is designed to simplify the measurement of low-level signals in applications such as temperature sensing and bridge-type pressure sensors by integrating dual programmable current sources and a flexible multiplexer.

Why Choose This Part

The device offers a high level of integration including a low-noise PGA, internal voltage reference, and two programmable current sources, reducing the total bill of materials. Its 24-bit resolution and flexible input multiplexer (2 differential or 4 single-ended channels) allow for precise multichannel data acquisition in a compact 3.5mm x 3.5mm VQFN package.

Applications

Temperature Measurement
Ideal for RTD, thermocouple, and thermistor measurements using its internal temperature sensor and excitation current sources.
Pressure Sensing
Accurately measures differential bridge sensors with high resolution and low noise using the integrated PGA up to 128V/V.
Flow Meters
Suited for high-precision industrial flow instrumentation where low power and small footprint are critical.
Portable Instrumentation
Optimized for battery-powered devices due to its low power consumption and duty-cycled operation modes.

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-VFQFN Exposed Pad
Reference Type External, Internal, Supply
Number of Inputs 2, 4
Operating Temperature -40degC ~ 125degC
Supplier Device Package 16-VQFN (3.5x3.5)
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

Engineers can evaluate this part using the ADS1220EVM evaluation module from Texas Instruments. Development requires an SPI-compatible microcontroller and the manufacturer provides C-code snippets for register configuration and data retrieval.

ADS1220 Family

Comparing specs that differ across variants. The current part is highlighted.

Part Number Package Stock
ADS1220IRVAR (this part) VFQFN-16 6,798
ADS1220IPW TSSOP-16 945
ADS1220EVM — 7