Lna architectures for ecg analog front end in cmos technology

Abstract

A low noise amplifier, usually abbreviated as LNA, plays a crucial role in the collection of ECG signals for further processing. Through the course of this paper, the numerous topologies of LNA have been thoroughly studied and reviewed. These topologies have been further compared to narrow down the best among them, based on parameters expected from an ideal LNA. According to our analysis, open-loop OTA topology is the best suited LNA topology according to all design parameters taken under consideration for its use in ECG analog front end applications.