ADS1298CZXGT

Analog Front End (AFE) Overview

The ADS1298CZXGT is an 8-channel, 24-bit Analog Front-End (AFE) designed for biopotential measurements. It integrates programmable gain amplifiers (PGA), internal reference, and on-chip oscillator within a 64-ball NFBGA package. The device supports data rates up to 32 kS/s per channel with a Sigma-Delta architecture. It operates on analog supply voltages from 2.7 V to 5.25 V and digital supplies from 1.65 V to 3.6 V. Key electrical parameters include a typical power consumption of 6 mW and an integral nonlinearity (INL) of 8 ppm. The component utilizes SPI interface for communication.

Analog Front End (AFE) Feature Summary

• 8-channel simultaneous sampling with 24-bit resolution
• Integrated PGA, internal reference voltage (4 V), and oscillator
• Supports lead-off detection and right-leg drive (RLD) amplifier
• Low power consumption of 6 mW at standard operating conditions

Analog Front End (AFE) Applications

• Electrocardiogram (ECG) systems
• Electroencephalogram (EEG) monitoring devices
• Portable medical instrumentation

Analog Front End (AFE) Procurement Notes

Verify the specific suffix 'CZXGT' against the manufacturer's official datasheet to confirm package type (NFBGA-64) and temperature range specifications. Ensure compatibility with required PCB footprint dimensions for the 64-ball ball grid array configuration before procurement.

Analog Front End (AFE) Selection Notes

Select this component when high-resolution biopotential acquisition is required in a compact form factor. The integrated features reduce external component count compared to discrete ADC solutions. Verify that the system design accommodates the NFBGA-64 soldering requirements and thermal dissipation needs for the specified power levels.

Analog Front End (AFE) Part Context

This part belongs to the Texas Instruments ADS129x family of low-power AFEs. It shares functional similarities with the ADS1294 and ADS1296 but offers eight channels. The ZXGT suffix indicates a specific tape-and-reel packaging variant suitable for automated surface-mount assembly processes.

Analog Front End (AFE) Replacement Considerations

Direct pin-compatible replacements within the same family include the ADS1294CZXGT and ADS1296CZXGT, which offer fewer channels but maintain similar interface and power characteristics.