ADS1254E/2K5

Overview

The ADS1254E/2K5 is a 24-bit analog-to-digital converter (ADC) manufactured by Texas Instruments, housed in a 20-SSOP package. It features a sigma-delta architecture with four differential inputs and an integrated multiplexer. The device supports a maximum sampling rate of 20 kSPS and communicates via an SPI digital interface. It operates with a 5V analog supply and a 1.8V to 3.6V digital supply. The component 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 oscillator and on-chip voltage reference
• Features a low-power mode to reduce energy consumption during idle periods

Applications

• Industrial process control systems
• Weighing scales and load cell measurements
• Medical equipment requiring high-resolution data acquisition

Procurement Notes

Verify the specific suffix '2K5' corresponds to the tape-and-reel packaging configuration containing 2,500 units per reel. Confirm that the E variant meets the required operating temperature specifications for the intended environment. Ensure compatibility with the target system's voltage levels before integration.

Selection Notes

Select this component when a 24-bit resolution and four differential channels are required in a compact surface-mount package. Compare against the ADS1255 if an internal reference or higher channel count is needed. Verify that the SPI interface timing aligns with the microcontroller capabilities for reliable data transfer at the desired sampling rates.

Part Context

This part belongs to the ADS125x family of precision ADCs from Texas Instruments. It shares architectural similarities with the ADS1251, ADS1252, and ADS1255 but is distinguished by its four-channel input capability and 20-pin SSOP form factor. The family is designed for applications demanding high accuracy and low noise performance.

Replacement Considerations

The ADS1254E/2K5G4 is a lead-free version of the same functional device. Other members of the ADS125x series may serve as alternatives depending on channel count and package requirements.