ADS1232IPW

Overview

The ADS1232IPW is a 24-bit delta-sigma analog-to-digital converter (ADC) manufactured by Texas Instruments, housed in a 24-pin TSSOP package. It features two differential or single-ended inputs and supports SPI communication. The device operates on a supply voltage range of 2.7V to 5.3V for both analog and digital domains. It offers a maximum sampling rate of 80 samples per second and includes an integrated programmable gain amplifier (PGA). Key performance specifications include a differential nonlinearity (DNL) of ±1 LSB and integral nonlinearity (INL) of ±0.001% FSR. The component functions within a temperature range of -40°C to +105°C.

Feature Summary

• Integrated 24-bit delta-sigma architecture with built-in programmable gain amplifier
• Dual-channel input multiplexer supporting differential and single-ended configurations
• Built-in 50Hz/60Hz rejection filter capability for noise suppression
• On-chip oscillator eliminates the need for external clock components

Applications

• High-precision resistive bridge sensor interfaces
• Weigh scale systems requiring high resolution
• Industrial process control transmitters
• Precision measurement instrumentation

Procurement Notes

Verify the specific ordering suffix to confirm packaging type, as IPW denotes tube packaging while IPWR indicates tape and reel. Confirm RoHS compliance status and moisture sensitivity level requirements against project specifications. Ensure the external reference voltage source matches the device's operational limits. Validate pin compatibility when replacing older variants such as those with G4 suffixes.

Selection Notes

Select this component when dual-channel 24-bit resolution is required at low data rates up to 80 SPS. The internal PGA reduces the need for external amplification stages. Consider the ADS1234 if four input channels are necessary instead of two. Ensure the application can accommodate the external reference requirement, as the device does not contain an internal reference voltage source.

Part Context

The ADS1232 belongs to the ADS123x family of precision ADCs designed for field transmitters and sensors. It shares architectural similarities with the ADS1230 and ADS1234 but differs in channel count and pin configuration. The IPW variant specifically utilizes a 24-lead thin-shrink small-outline package suitable for surface-mount assembly.

Replacement Considerations

ADS1232IPWR serves as the tape-and-reel equivalent for automated assembly. ADS1234IPW provides similar functionality with four input channels in a 28-pin package.