Low-Power Fifth-Order Butterworth OTA-C Low-Pass Filter with an Impedance Scaler for Portable ECG Applications. - Shuenn-Yuh Lee; Cheng-Pin Wang; Chuan-Yu Sun; Po-Hao Cheng; Yuan-Sun Chu (IEICE Trans. Electron., 2018)

A Fifth-Order Butterworth OTA-C LPF With Multiple-Output Differential-Input OTA for ECG Applications. - Chuan-Yu Sun; Shuenn-Yuh Lee (IEEE Trans. Circuits Syst. II Express Briefs, 2018)