{"title":"Measurement and parameter characterization of pseudo-resistor based CCIA for biomedical applications","authors":"Chih-Chan Tu, Tsung-Hsien Lin","doi":"10.1109/ISBB.2014.6820938","DOIUrl":null,"url":null,"abstract":"This paper performs the detailed analysis and measurement of a pseudo-resistor based CCIA used for bio-potential signal acquisition. The pseudo-resistor is implemented with MOS transistors operating in deep sub-threshold region, whose characteristic is not well-modeled in simulation. The resistor value versus control voltage and the effect of leakage current at OPAMP input node are discussed and characterized in this paper. The tested chip consumes 1.3μA from a 1-V supply, and the total integrated noise from 0.5 to 100 Hz is 3.26μVrms. It achieves a noise efficiency factor of 14.6.","PeriodicalId":265886,"journal":{"name":"2014 IEEE International Symposium on Bioelectronics and Bioinformatics (IEEE ISBB 2014)","volume":"63 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2014-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"9","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2014 IEEE International Symposium on Bioelectronics and Bioinformatics (IEEE ISBB 2014)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ISBB.2014.6820938","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 9
Abstract
This paper performs the detailed analysis and measurement of a pseudo-resistor based CCIA used for bio-potential signal acquisition. The pseudo-resistor is implemented with MOS transistors operating in deep sub-threshold region, whose characteristic is not well-modeled in simulation. The resistor value versus control voltage and the effect of leakage current at OPAMP input node are discussed and characterized in this paper. The tested chip consumes 1.3μA from a 1-V supply, and the total integrated noise from 0.5 to 100 Hz is 3.26μVrms. It achieves a noise efficiency factor of 14.6.
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