ADS1254E

Overview

The ADS1254E/2K5 is a 24-bit analog-to-digital converter (ADC) manufactured by Texas Instruments. It features a delta-sigma architecture with four differential inputs and an integrated multiplexer. The device operates with a single 5V analog supply and a digital supply ranging from 1.8V to 3.6V. It supports data rates up to 20k samples per second via a serial peripheral interface (SPI). The component is housed in a 20-lead SSOP package and functions within a temperature range of -40°C to +85°C.

Feature Summary

• Integrates a programmable gain amplifier and input buffer for signal conditioning
• Includes an internal reference voltage source and oscillator
• Features a low-power shutdown mode for energy efficiency

Applications

• Industrial process control systems
• Weighing scales and load cell measurements
• Medical equipment requiring high precision
• Scientific instruments and data acquisition

Procurement Notes

Verify the specific suffix against official documentation, as it indicates packaging variations such as tape and reel quantities. Confirm RoHS compliance status and moisture sensitivity level requirements during storage and handling. Ensure the ordering part number matches the exact pin configuration and package dimensions required for the target PCB layout.

Selection Notes

Select this component when high resolution and multiple differential channels are required in a compact form factor. Compare performance metrics against the ADS1253 or ADS1255 if pin count or input channel configurations differ from project needs. Verify that the SPI interface timing aligns with the microcontroller capabilities and that the power supply constraints fit the system design.

Part Context

This device belongs to the ADS125x family of precision ADCs from Texas Instruments. It shares architectural similarities with the ADS1252 and ADS1255 but offers a specific balance of channel count and package size. The E suffix typically denotes an extended industrial temperature range variant within the product line.

Replacement Considerations

The ADS1254E/2K5TR is a compatible alternative offering identical electrical specifications with a tape and reel packaging format. Verify pin compatibility and software register settings before substituting different packaging options within the same model series.