ADS1234IPW

Overview

The ADS1234IPW is a 24-bit, ultra-low-noise analog-to-digital converter (ADC) from Texas Instruments, utilizing sigma-delta architecture. It features four differential input channels with an integrated multiplexer and programmable gain amplifier (PGA). The device operates on a single supply voltage ranging from 2.7 V to 5.3 V for both analog and digital domains. It supports SPI and I2C interfaces and offers a maximum data rate of 80 samples per second. Key performance metrics include a differential nonlinearity (DNL) of ±1 LSB and integral nonlinearity (INL) of ±10 ppm. The component is housed in a 28-TSSOP package and functions within a temperature range of -40°C to +105°C.

Feature Summary

• Integrates a low-noise chopper-stabilized instrumentation amplifier with selectable gain settings.
• Includes a built-in oscillator and dedicated pins for external reference voltage connection.
• Provides hardware filtering capabilities with selectable 50 Hz or 60 Hz rejection frequencies.

Applications

• Industrial process control systems requiring high-precision signal acquisition.
• Weighing scales and load cell measurement applications.
• Medical equipment such as ECG monitors and patient monitoring devices.
• High-resolution sensor interfaces for pressure and temperature transducers.

Procurement Notes

Verify the specific ordering suffix to confirm the package type and tube packaging configuration. Ensure compatibility with the intended operating temperature range and power supply requirements. Confirm RoHS compliance status through official manufacturer documentation before integration into regulated products.

Selection Notes

Select this model when four independent differential inputs are required alongside high resolution. Compare against the ADS1232 if only two channels are needed, or the ADS1230 for lower resolution applications. Consider the ADS1242 series if a smaller 16-pin package is preferred for space-constrained designs.

Part Context

This component belongs to the ADS123x family of precision ADCs designed for weigh scale and industrial sensor applications. It shares architectural similarities with the ADS1232 but provides additional channel capacity. The IPW suffix denotes a plastic TSSOP package suitable for surface-mount assembly in automated manufacturing processes.

Replacement Considerations

The ADS1234IPWRG4 is a verified lead-free replacement variant within the same product line. Verify pinout compatibility and electrical specifications before substitution. Other family members like the ADS1232 offer fewer channels but may fit different board layouts.