A Review on OTA with Low Power and Low Noise Techniques for Medical Applications

Abstract

Wearable Electrocardiography (ECG) sensors are most commonly used in monitoring a patient heart condition to detect cardiovascular diseases like heart failure and cardiac arrhythmia and many more. The amplifier that records noise, power and linearity performance in an ECG sensor is the crucial part. In the existing systems, different approaches are proposed for optimization in power and noise. However, the OTA is implemented by using various techniques that can mainly either reduce the power consumption or have lower Noise Efficiency Factors (NEF). In the proposed paper, different research works are observed and studied and hence results are compared between the works and discussed here.