ADS1254EG4

Overview

The ADS1254EG4 is a 24-bit, low-power analog-to-digital converter (ADC) manufactured by Texas Instruments under the Burr-Brown brand. It features a programmable data rate up to 20 kSPS and includes an on-chip programmable gain amplifier (PGA) with gains from 1 to 128. The device integrates a precision internal reference, an oscillator, and an analog multiplexer supporting four single-ended or two differential input channels. Key electrical specifications include a noise-free resolution of 20 bits at 2.5 SPS and a supply voltage range of 2.7 V to 5.5 V. It operates within a temperature range of -40°C to +85°C and is housed in a 28-pin TSSOP package.

Feature Summary

• 24-bit resolution with up to 20 kSPS data rate
• Integrated PGA with gains from 1 to 128
• Four single-ended or two differential input channels
• Low power consumption: 3.6 mA at 5 V

Applications

• Industrial process control systems
• Weight scales and load cell interfaces
• Medical equipment requiring high precision
• Data acquisition systems

Part Context

The ADS1254EG4 is the green (lead-free) variant of the standard ADS1254 ADC. The 'E' suffix indicates an extended operating temperature range (-40°C to +85°C), while 'G4' denotes compliance with RoHS directives and lead-free manufacturing processes as per Texas Instruments' product transition standards.

Replacement Considerations

Direct pin-compatible replacements include the ADS1254E without the G4 suffix for non-RoHS applications, or the ADS1254IPW for surface-mount alternatives in different packages. For system upgrades, the ADS1255 offers additional channels and higher performance but requires software adaptation.