Switched-capacitor filter design for ECG application using 180nm CMOS technology

Abstract

This Paper proposes second order switched capacitor filters for ECG application. ECG signal contains different types of noise and artifacts thereby giving rise to the need for signal filtering. Thus a switched capacitor highpass filter withcutoff frequency 0.05Hz and a low pass filterwith cutoff frequency 150Hz are presented. The circuits consist of two phase clock generator, gain stage and switched capacitors. These circuits are designed in Cadence Virtuoso Analog Design Environment using SCL (semi-conductor laboratory) 180nm technology.