ADS1292RIRSMT

Analog Front End (AFE) Overview

The ADS1292RIRSMT is a Texas Instruments analog front-end (AFE) featuring two synchronized 24-bit sigma-delta ADCs. It integrates programmable gain amplifiers, an internal reference, and an on-chip oscillator for biopotential measurements. The device operates with an analog supply of 2.7 V to 5.25 V and a digital supply of 1.7 V to 3.6 V. It supports data rates up to 8 kSPS per channel with a typical power consumption of 740 µW. The component is housed in a 32-pin VQFN package measuring 4 mm x 4 mm and functions within a temperature range of -40°C to +85°C.

Analog Front End (AFE) Feature Summary

• Integrated 2-channel 24-bit ADC with built-in PGA and internal reference
• Supports continuous lead-off detection via internal current sources/sinks
• Flexible input multiplexers allow independent connection to internal signals for testing and temperature monitoring
• Configurable right-leg drive (RLD) output signal generation

Analog Front End (AFE) Applications

• Portable medical electrocardiogram (ECG) systems
• Sports and fitness monitoring devices
• Scalable multi-lead medical instrument architectures

Analog Front End (AFE) Procurement Notes

Verify the suffix 'MT' corresponds to the 32-VQFN (4x4) package variant as specified in the datasheet. Confirm RoHS compliance status and moisture sensitivity level (MSL 2) requirements for your assembly process. Ensure voltage levels match the specified analog and digital supply ranges before integration.

Analog Front End (AFE) Selection Notes

Select this model when dual-channel synchronization is required for high-resolution biopotential acquisition. The integrated oscillator and reference reduce external component count compared to discrete solutions. Verify that the 4mm x 4mm footprint fits the PCB layout constraints and that the SPI interface timing aligns with the host microcontroller capabilities.

Analog Front End (AFE) Part Context

This part belongs to the ADS1292R series, which includes variants like the ADS1292RIRSMR. The 'MT' suffix specifically denotes the VQFN package type, distinguishing it from other packaging options within the same electrical family. All variants share identical core functionality and pinout compatibility.

Analog Front End (AFE) Replacement Considerations

Direct substitutes include other ADS1292R package variants such as ADS1292RIRSMR. For single-channel applications, consider the ADS1291R series. Multi-channel expansions may require ADS1298R or ADS1299R models.