ADS1257IRGWT

Overview

The ADS1257IRGWT is a 24-bit, four-channel analog-to-digital converter (ADC) from Texas Instruments. It utilizes a sigma-delta architecture to achieve a maximum sampling rate of 30 kSPS. The device supports both differential and single-ended input configurations via an SPI interface. It operates with a 5 V analog supply and a digital supply ranging from 1.8 V to 3.6 V. Key electrical parameters include a power dissipation of 38 mW and an external reference voltage requirement of 2.5 V. The component is housed in a VQFN-20 package and functions within a temperature range of -40°C to +85°C.

Feature Summary

• Integrated programmable gain amplifier for signal conditioning
• Built-in GPIO pins for system control flexibility
• Hardware filters providing 50/60 Hz line frequency rejection

Applications

• Industrial process control systems requiring high-resolution data acquisition
• Portable instrumentation utilizing low-power operation
• Weight scales and load cell measurement applications

Procurement Notes

Verify the specific suffix IRGWT to confirm the VQFN-20 package type and industrial temperature rating. Ensure the ordering part number matches the required reel or cut tape packaging format. Confirm RoHS compliance status through official manufacturer documentation before finalizing procurement orders.

Selection Notes

Select this component when four independent channels are necessary for simultaneous sampling. The 24-bit resolution and 30 kSPS speed suit precision measurements over high-speed requirements. Consider the external reference voltage constraint and the specific supply voltage ranges during circuit design integration.

Part Context

This device belongs to the ADS1257 series of precision ADCs. It shares architectural similarities with other members like the ADS1259 but offers a distinct four-channel configuration. The series targets applications demanding high accuracy and low noise performance in compact form factors.

Replacement Considerations

The ADS1257IRGWR is a verified alternative offering identical functionality in a tape-and-reel package format. Verify pin compatibility and thermal characteristics when substituting between the W (cut tape) and R (reel) suffixes.