ADS1234IPWG4

Overview

The ADS1234IPWG4 is a 24-bit, ultra-low-noise analog-to-digital converter (ADC) from Texas Instruments. It features four differential inputs and utilizes a sigma-delta architecture with an integrated programmable gain amplifier (PGA). The device supports SPI and I2C interfaces and operates on a single supply voltage ranging from 2.7 V to 5.3 V for both analog and digital domains. It delivers a maximum sampling rate of 80 samples per second and includes built-in 50/60 Hz rejection capabilities. The component is housed in a 28-pin TSSOP package and is specified for operation across a temperature range of -40°C to +105°C.

Feature Summary

• Integrates a 24-bit sigma-delta ADC with a multiplexer and programmable gain amplifier for high-precision signal conditioning.
• Provides inherent 50 Hz and 60 Hz line-frequency rejection to minimize power line interference in measurements.
• Supports flexible digital communication via standard SPI and I2C serial interfaces.

Applications

• Industrial process control systems requiring high-resolution sensor data acquisition
• Weigh scales and force measurement instrumentation
• Strain gauge and load cell signal conditioning

Procurement Notes

Verify the specific suffix G4 indicates lead-free compliance and RoHS status as defined by the manufacturer. Confirm the package type matches the required PCB footprint. Ensure the operating environment stays within the specified temperature limits. Check for moisture sensitivity level requirements during storage and handling. Validate that the external reference voltage meets the device specifications.

Selection Notes

Select this component when high resolution and low noise are critical for differential sensor signals. Consider the 24-bit resolution and PGA integration for applications needing minimal external amplification. Evaluate the 80 S/s data rate against system speed requirements. Verify compatibility with available SPI or I2C bus configurations. Assess power consumption constraints given the dual supply voltage options.

Part Context

This part belongs to the ADS123x family of precision ADCs designed for weigh scale and industrial applications. It shares architectural similarities with the ADS1232 but offers four input channels instead of two. The IPW package denotes a plastic small-outline package with wide body. The G4 suffix typically signifies lead-free and RoHS-compliant manufacturing processes.

Replacement Considerations

The ADS1232IPW serves as a functional substitute if only two differential channels are required. The ADS1234IPWR provides the same electrical performance in a tape-and-reel package format. Verify pinout compatibility and software register settings when transitioning between these variants.