Design And Implantation of An ECG Signal Amplifier and Filter Processing System

Abstract

As advancements in semiconductor technology converge with the growing focus on cardiovascular diseases, there's a discernible push for Electrocardiogram (ECG) signal monitoring technologies that prioritize reduced power consumption and noise. This paper introduces a front-end architecture for the ECG signal monitoring system, comprising modules for acquisition, instrumentation amplification, and filtering. Given the varied noise profiles in ECG signals, our design harnesses a coupled front-end acquisition, a capacitive feedback instrumentation amplifier with a single op-amp, and uses a chopping technique. This approach primarily targets interference mitigation during acquisition and amplification, all while maintaining minimal power usage. Subsequently, an effective filter circuit tailored is added to remove noise modulated by the chopper. This design refines the ECG system's front-end, minimizing disturbances to subsequent circuits and enhancing the accuracy of the back-end ADC and digital processing part. This bioelectric monitoring system's design, characterized by low power consumption and minimal noise, is also well-suited for portable medical devices.