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dc.contributor.authorTang, Taoen_US
dc.contributor.authorGoh, Wang Lingen_US
dc.contributor.authorYao, Leien_US
dc.contributor.authorCheong, Jia Haoen_US
dc.contributor.authorGao, Yuanen_US
dc.identifier.citationTang, T., Goh, W. L., Yao, L., Cheong, J. H. & Gao, Y. (2020). An integrated multi-channel biopotential recording analog front-end IC with area-efficient driven-right-leg circuit. IEEE Transactions On Biomedical Circuits and Systems, 14(2), 297-304.
dc.description.abstractA multi-channel biopotential recording analog front-end (AFE) with a fully integrated area-efficient driven-right-leg (DRL) circuit is presented in this paper. The proposed AFE includes 10 channels of low-noise capacitive coupled instrumentation amplifier (CCIA), one shared 10-bit SAR ADC and a fully integrated DRL to enhance the system-level common-mode rejection ratio (CMRR). The proposed DRL circuit senses the common-mode at the CCIA output so that the AFE gain is reused as the DRL loop gain. Therefore, area efficient unit-gain buffer with small averaging capacitors can be used in DRL circuit to reduce the circuit area significantly. The proposed AFE has been implemented in a standard 0.18-μm CMOS process. The DRL circuit achieved more than 85% chip area reduction compared to the state-of-art on-chip DRL circuits and maximum 60 dB enhancement to system-level CMRR. Measurement results show high/low AFE gain of 60 dB/54 dB respectively with 1 μA/channel current consumption under 1.0 V power supply. The measured AFE input-referred noise in 1 Hz - 10k Hz range is 4.2 μVrms and the maximum system-level CMRR is 110 dB.en_US
dc.description.sponsorshipAgency for Science, Technology and Research (A*STAR)en_US
dc.relation.ispartofIEEE transactions on biomedical circuits and systemsen_US
dc.rights© 2019 IEEE. All rights reserved.en_US
dc.subjectEngineering::Electrical and electronic engineeringen_US
dc.titleAn integrated multi-channel biopotential recording analog front-end IC with area-efficient driven-right-leg circuiten_US
dc.typeJournal Articleen
dc.contributor.schoolSchool of Electrical and Electronic Engineeringen_US
dc.subject.keywordsBiopotential Recordingen_US
dc.subject.keywordsCommon Mode Rejection Ratioen_US
dc.description.acknowledgementThis work was supported by A∗STAR (Agency for Science, Technology and Research) BMRC (Biomedical Research Council), Singapore, under Grant IAF311022. This paper was recommended by Associate Editor Y. Zheng. (Corresponding author: Yuan Gao.)en_US
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