ADS1298RIZXGT

Analog Front End (AFE) Overview

The ADS1298RIZXGT is a low-power, 8-channel, 24-bit analog front-end (AFE) designed for biopotential measurements. It integrates programmable gain amplifiers (PGAs), internal reference sources, and an on-chip oscillator within a compact 64-ball WQFN package. The device supports data rates up to 32 kSPS and operates with analog supply voltages ranging from 2.7 V to 5.25 V and digital supplies from 1.65 V to 3.6 V. Key electrical specifications include a signal-to-noise ratio of 112 dB and a power consumption of approximately 6 mW per channel in typical operation. It features a serial peripheral interface (SPI) for communication and includes integrated right-leg drive (RLD) amplifiers and Wilson/Goldberg center terminal generators.

Analog Front End (AFE) Feature Summary

• Integrates eight 24-bit sigma-delta ADCs with configurable PGA gains ranging from 1 to 12.

Analog Front End (AFE) Applications

• Portable electrocardiography (ECG) systems
• Electroencephalography (EEG) monitoring equipment

Analog Front End (AFE) Part Context

This component belongs to the Texas Instruments ADS129x family of biopotential AFEs. The 'R' suffix indicates a tape-and-reel packaging configuration, while 'IZXGT' specifies the industrial temperature range (-40°C to +85°C) and the 64-ball wafer-level chip-scale package (WQFN). It serves as a high-integration alternative to discrete amplifier and ADC solutions for medical instrumentation.

Analog Front End (AFE) Replacement Considerations

Compatible pin-to-pin replacements within the same family include the ADS1294 (4-channel) and ADS1296 (6-channel). For direct functional substitution with identical pinouts and feature sets, verify against other variants in the ADS1298 series, such as the ADS1298IPAG or ADS1298IDGST, ensuring package compatibility and temperature rating alignment.