Energy-efficient low-noise 16-channel analog-front-end circuit for bio-potential acquisition

Shang Lin Wu, Po-Tsang Huang, Teng Chieh Huang, Kuan-Neng Chen, Jin-Chern Chiou, Kuo Hua Chen, Chi Tsung Chiu, Ho Ming Tong, Ching Te Chuang, Wei Hwang

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

4 Scopus citations

Abstract

In this paper, an energy-efficient and low-noise 16-channel analog front-end (AFE) circuitry is proposed for acquisition of electrophysiological signals. This fully integrated front-end circuit comprises two differential difference amplifiers (DDAs) and DC offset rejection components. Additionally, the DDA is designed using a double input Gm-stage and a class-AB output for achieving high common-mode rejection ratio (CMRR), low-noise and energy efficiency. The 16-channel AFE with analog-to-digital converters (ADCs) is implemented in TSMC 0.18μm CMOS process. The measurement results show that the AFE can realize 60.3dB gain with only 20.67μW for each channel. The bandwidth of the AFE is from 2.32Hz to 6.61kHz. Furthermore, the total input referred noise and noise efficiency factor (NEF) are 0.826μVrms and 2.78 only within the target frequency range of 0.1Hz to kHz, respectively.

Original languageEnglish
Title of host publicationTechnical Papers of 2014 International Symposium on VLSI Design, Automation and Test, VLSI-DAT 2014
PublisherIEEE Computer Society
ISBN (Print)9781479927760
DOIs
StatePublished - 1 Jan 2014
Event2014 International Symposium on VLSI Design, Automation and Test, VLSI-DAT 2014 - Hsinchu, Taiwan
Duration: 28 Apr 201430 Apr 2014

Publication series

NameTechnical Papers of 2014 International Symposium on VLSI Design, Automation and Test, VLSI-DAT 2014

Conference

Conference2014 International Symposium on VLSI Design, Automation and Test, VLSI-DAT 2014
CountryTaiwan
CityHsinchu
Period28/04/1430/04/14

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