TIADS1291IRSMR
Overview
The ADS1291IRSMR is a single-channel, 24-bit analog front-end (AFE) designed specifically for portable, low-power medical electrocardiogram (ECG) and heart-rate monitoring. It integrates a low-noise programmable gain amplifier (PGA), a high-resolution delta-sigma analog-to-digital converter, and essential peripherals like lead-off detection and a right leg drive (RLD) amplifier. Operating at just 495 microwatts, this IC is optimized for battery-powered wearable devices where high precision and minimal power consumption are critical.
Why Choose This Part
This AFE significantly reduces component count by integrating an internal oscillator, reference voltage, and specialized medical circuitry like right leg drive and lead-off detection. It provides exceptional power efficiency at 450 microamps of current consumption during normal operation while maintaining a low-noise floor of 8 nV/rtHz.
Applications
Key Specifications
Getting Started
To evaluate the device, engineers typically use the ADS1292REVM-PDK evaluation kit from Texas Instruments, which supports the single-channel ADS1291. Firmware development involves configuring the 24-bit ADCs and PGAs via the standard 4-wire SPI interface, ensuring proper power sequencing for the dual analog (2.7V to 5.25V) and digital (1.7V to 3.6V) supply rails.
