Data acquisition module for discrete LEAD I ECG implementation (for ECG systems)

MCP604-I/SL

SSW32768KFECH-I

L0504-Murata muRata common mode inductor 90Ω 150mA

description

This TI verification design is for electrocardiogram (ECG). ECG is a method of measuring cardiac electrical activity that requires high-precision analog front-end instrument gain stages, filtering, and high-resolution digital conversion. This design takes a certain approach to designing the LEAD I ECG measurement system from multiple discrete analog components. With an instrument front end using the OPA2333, ultra low power is optimized and digitized by the 18-bit ADS8881.

characteristic

18-bit, 10ksps sampling rate

200Hz ECG signal

Optimization: ECG

Power: 1.5mW at AVDD = 3.3V

Utilize ADS8881 (18-bit, 1Msps SAR ADC), OPA2333 (input / INA), OPA313 + REF3330 (reference)

Schematic/block diagram