Low-power systematic integration of the instrumentation amplifier and the OTA-C filter for ECG acquisition systems

Author

Tsai, Tsung-Heng ; Chen, Yen-Cheng

Author_Institution

Electr. Eng. Dept., Nat. Chung Cheng Univ., Ming-Hsiung, Taiwan

fYear

2011

fDate

3-5 Nov. 2011

Firstpage

53

Lastpage

56

Abstract

This paper presents low-power systematic integration of the instrumentation amplifier and the low-pass filter for portable ECG monitoring systems. To reduce overall power consumption, the electrode offset cancellation was carried out by sharing one operational transconductance amplifier (OTA) between the amplifier and the filter. Dual loops were implemented to provide offset cancellation so that the cancellation rage is extended. The analog front-end circuit is designed and simulated in a TSMC 90 nm CMOS process. The total power consumption is 3.8 μW from a 1-V supply voltage. Simulation results show that the achieved CMRR is 100.3 dB.

Keywords

CMOS analogue integrated circuits; biomedical electrodes; biomedical electronics; electrocardiography; instrumentation amplifiers; low-pass filters; low-power electronics; medical signal processing; operational amplifiers; patient monitoring; portable instruments; power consumption; CMOS; OTA-C filter; TSMC; analog front-end circuit; common-mode rejection ration; electrode offset cancellation; instrumentation amplifier; low-pass filter; low-power systematic integration; operational transconductance amplifier; portable ECG monitoring systems; power consumption; Electrocardiography; Electrodes; Instruments; Low pass filters; Power demand; Transconductance; Transistors;

fLanguage

English

Publisher

ieee

Conference_Titel

Bioelectronics and Bioinformatics (ISBB), 2011 International Symposium on

Conference_Location

Suzhou

Print_ISBN

978-1-4577-0076-7

Type

conf

DOI

10.1109/ISBB.2011.6107643

Filename

6107643