Improvement of ECG amplifier for wearable devices

Abstract

The amplifier occupies half of the volume of the entire ECG amplifier circuit, so the design of the amplifier becomes the key to the design of the ECG sensor in wearable devices. This article will provide some ideas for improving the amplifier circuit to achieve higher accuracy, lower power consumption, and smaller ECG modules. The author compares the advantages of different circuits and the performance of different components by means of comparison. Some ideas for improving ECG amplifying circuit are obtained. The amplifier occupies half of the volume of the entire ECG amplifier circuit, so the design of the amplifier becomes the key to the design of the ECG sensor in wearable devices. This article will provide some ideas for improving the amplifier circuit to achieve higher accuracy, lower power consumption, and smaller ECG modules. The author compares the advantages of different circuits and the performance of different components by means of comparison. Some ideas of improving ECG amplifying circuit are obtained, and some methods of improving ECG amplifying circuit by differential amplifying circuit, changing circuit components and adding filter structure are summarized.