ADS1234IPWR

Overview

The ADS1234IPWR is a 24-bit ultra-low-noise analog-to-digital converter (ADC) from Texas Instruments, housed in a 28-TSSOP package. It features four differential input channels with an integrated programmable gain amplifier (PGA) and a built-in oscillator. The device supports data rates of up to 80 samples per second and operates on supply voltages ranging from 2.7 V to 5.3 V for both analog and digital domains. It includes internal offset calibration capabilities and offers 50/60 Hz line frequency rejection. The component functions within a temperature range of -40°C to +105°C and utilizes SPI or I2C interfaces for communication.

Feature Summary

• Integrates a low-noise programmable gain amplifier with selectable gain settings to support small differential input signals directly.
• Includes an internal oscillator and precision digital filter architecture designed for high-resolution signal acquisition.
• Provides hardware-controlled offset calibration to enhance measurement accuracy without complex register programming.
• Features dedicated control pins for easy interface isolation and direct connection to microcontrollers.

Applications

• Resistive bridge sensor signal conditioning
• Weigh scale systems
• Strain gauge measurements
• Pressure sensor interfaces

Procurement Notes

Verify the specific ordering suffix to confirm package type and tape/reel specifications. Confirm RoHS compliance status and moisture sensitivity level requirements for your assembly process. Ensure the voltage supply ranges match your system design constraints before procurement.

Selection Notes

Select this component when high resolution and low noise are required for bridge sensor applications. Consider the 28-pin TSSOP package size against available board space. Evaluate the need for multiple differential inputs versus single-channel alternatives like the ADS1230 if channel count exceeds requirements.

Part Context

This part belongs to the ADS123x family of delta-sigma ADCs designed for precision measurement applications. It shares architectural similarities with the ADS1232 but offers additional input channels. The IPWR suffix indicates a green plastic TSSOP-28 package with lead-free terminals and reel packaging.

Replacement Considerations

The ADS1234IPW is a compatible variant differing primarily in tube packaging instead of reel. Verify pin compatibility and electrical specifications remain identical before substitution.