ADS124S08IRHBT

Overview

The ADS124S08IRHBT is a 24-bit delta-sigma analog-to-digital converter (ADC) featuring an integrated multiplexer and programmable gain amplifier. It supports up to 12 single-ended inputs or six differential channels. The device operates with an analog supply voltage range of 2.7V to 5.25V and a digital supply voltage range of 2.7V to 3.6V. It delivers a maximum data rate of 4,000 samples per second. The component utilizes a serial peripheral interface (SPI) for communication and is housed in a 32-pin VFQFN package with exposed pad dimensions of 5x5 mm.

Feature Summary

• Integrates a 12-channel multiplexer and programmable gain amplifier within a single delta-sigma architecture
• Supports high-resolution measurements with 24-bit resolution capability
• Features flexible input configurations for both single-ended and differential signal connections

Applications

• Industrial process control systems requiring multi-channel sensor acquisition
• Weighing scales and load cell measurement applications
• Temperature measurement systems utilizing resistance temperature detectors (RTDs)

Procurement Notes

Verify the specific suffix IRHBT to confirm the tape-and-reel packaging format and industrial temperature grade. Confirm that the required analog and digital supply voltages fall within the specified ranges of 2.7V-5.25V and 2.7V-3.6V respectively. Ensure the design accommodates the 32-VQFN package thermal requirements and SPI interface timing constraints.

Selection Notes

Select this component when a high number of single-ended inputs are required without external multiplexers. The integrated PGA reduces the need for discrete amplification stages. Consider the 4kSPS maximum speed if real-time high-frequency sampling is not critical. Verify compatibility with the host microcontroller's SPI clock speeds and voltage levels.

Part Context

This part belongs to the ADS124S08 family of precision ADCs from Texas Instruments. It shares architectural similarities with the ADS124S06 but offers additional input channels. The device is designed for applications demanding high accuracy and low noise in compact form factors, serving as a direct replacement for older multi-channel ADC solutions in industrial instrumentation.

Replacement Considerations

The ADS124S06 is a related variant with fewer input channels. Cross-reference pinouts and register maps when substituting with other members of the ADS124S series to ensure software compatibility.