ADS1232IPWR

Overview

The ADS1232IPWR is a 24-bit delta-sigma analog-to-digital converter (ADC) manufactured by Texas Instruments, housed in a 24-TSSOP package. It features two differential or four single-ended inputs with an integrated programmable gain amplifier offering gains of 1, 2, 64, and 128. The device supports data rates of 10 SPS for high resolution (22.5 bits effective) and 80 SPS for higher speed (19.2 bits effective). It operates on a single supply voltage ranging from 2.7V to 5.3V for both analog and digital domains. Communication is handled via a simple SPI-compatible serial interface.

Feature Summary

• Integrated low-noise programmable gain amplifier with selectable gain settings
• Built-in precision bridge sensor excitation voltage generator
• Internal low-drift oscillator eliminating the need for external clock components
• Dedicated internal temperature sensor for thermal compensation

Applications

• Electronic weighing scales and load cell measurements
• Industrial pressure sensors and transmitters
• Medical instrumentation requiring precise signal acquisition
• High-resolution multimeter input stages

Procurement Notes

Verify the specific suffix IPWR indicates tape-and-reel packaging when ordering. Confirm RoHS compliance status matches current manufacturing standards. Ensure the supplier provides original manufacturer documentation to validate authenticity. Check for any recent product change notices regarding pinout or electrical characteristics before finalizing procurement plans.

Selection Notes

Select this component when 24-bit resolution and low noise are critical for bridge sensor applications. Choose the ADS1232IPWR over other variants if the 24-TSSOP surface-mount package is required. Consider the integrated PGA and excitation driver to reduce external component count compared to general-purpose ADCs. Verify that the 80 SPS maximum data rate meets the system's bandwidth requirements.

Part Context

The ADS1232 belongs to Texas Instruments' family of high-precision delta-sigma ADCs designed specifically for resistive bridge sensors. It shares architectural similarities with the ADS1234 but differs in channel count. This series is optimized for applications demanding high accuracy without complex external circuitry, serving as a direct replacement for older discrete solutions in industrial sensing.

Replacement Considerations

The ADS1234 is a compatible alternative offering four differential inputs instead of two. For lower cost applications, the ADS1220 provides 20-bit resolution. Systems requiring an integrated excitation current source should consider the ADS1235. Verify pin compatibility and register mapping before substituting these parts.