Luca Sant, A. Fant, S. Stojanovic, S. Fabbro, J. Ceballos
{"title":"A 13.2b optical proximity sensor system with 130klx ambient light rejection capable of heart rate and blood oximetry monitoring","authors":"Luca Sant, A. Fant, S. Stojanovic, S. Fabbro, J. Ceballos","doi":"10.1109/ESSCIRC.2015.7313905","DOIUrl":null,"url":null,"abstract":"A system for measuring optical proximity based on reflection of modulated light is presented. Its novel input stage topology comprising an AC coupled TIA and a two stage DC rejection circuit based on a synthesized inductive impedance, provides readouts with a resolution better than 13.2 ENOB. This allows the sensor system to be used without modifications also for heart rate and blood oximetry monitoring.","PeriodicalId":11845,"journal":{"name":"ESSCIRC Conference 2015 - 41st European Solid-State Circuits Conference (ESSCIRC)","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2015-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"6","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"ESSCIRC Conference 2015 - 41st European Solid-State Circuits Conference (ESSCIRC)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ESSCIRC.2015.7313905","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 6
Abstract
A system for measuring optical proximity based on reflection of modulated light is presented. Its novel input stage topology comprising an AC coupled TIA and a two stage DC rejection circuit based on a synthesized inductive impedance, provides readouts with a resolution better than 13.2 ENOB. This allows the sensor system to be used without modifications also for heart rate and blood oximetry monitoring.
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