Survey and Implementation of Programmable Gain Amplifiers

Abstract

Wearable devices have limitations in their power consumption. Due to that, the implementation of wearable devices circuits requires reducing the power consumption as much as possible. Most wearable device circuits require amplifiers to enlarge the input signals, especially from sensors modules. A survey is done to settle on the most appropriate PGAs for ECG applications. A low power consumption programmable gain amplifier is chosen to be implemented in an ECG sensor module using 130-nm CMOS technology to reduce the sensor’s power consumption. The chosen PGA for ECG sensor application requires power less than 165 nW.