{"title":"A $43.8\\mu \\mathrm{W}$ per Channel Biopotential Readout System using Frequency Division Multiplexing with Cable Motion Artifact Suppression","authors":"Jinyong Kim, Hyunkyu Ouh, M. Johnston","doi":"10.1109/CICC48029.2020.9075951","DOIUrl":null,"url":null,"abstract":"This paper presents a fully-integrated biopotential readout system using frequency division multiplexing (FDM) for general purpose, multi-channel biopotential signal acquisition. FDM reduces the number of required cables between active electrode and back-end readout, and frequency translation prior to transmission mitigates low-frequency motion artifacts and mains interference in the cable. The 4-channel EMG/ECG architecture carries all channels over a 3-wire interface and attenuates low-frequency cable motion artifacts by 15X and 60 Hz mains noise coupled into the cable by 62X. The IC is fabricated in 180 nm CMOS, including both front-end active electrode and back-end demodulation architectures; each 1 Hz-150 Hz, differential active electrode channel occupies 0.75 mm2 and consumes 43.8 $\\mu \\mathrm{W}$.","PeriodicalId":409525,"journal":{"name":"2020 IEEE Custom Integrated Circuits Conference (CICC)","volume":"69 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"3","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2020 IEEE Custom Integrated Circuits Conference (CICC)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/CICC48029.2020.9075951","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 3
Abstract
This paper presents a fully-integrated biopotential readout system using frequency division multiplexing (FDM) for general purpose, multi-channel biopotential signal acquisition. FDM reduces the number of required cables between active electrode and back-end readout, and frequency translation prior to transmission mitigates low-frequency motion artifacts and mains interference in the cable. The 4-channel EMG/ECG architecture carries all channels over a 3-wire interface and attenuates low-frequency cable motion artifacts by 15X and 60 Hz mains noise coupled into the cable by 62X. The IC is fabricated in 180 nm CMOS, including both front-end active electrode and back-end demodulation architectures; each 1 Hz-150 Hz, differential active electrode channel occupies 0.75 mm2 and consumes 43.8 $\mu \mathrm{W}$.
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