Shengqun Zheng, Kai Sheng, Junxi Chen, Weixin Gai, Jianhua Feng
{"title":"A clock-feedthrough compensation technique for bootstrapped switch","authors":"Shengqun Zheng, Kai Sheng, Junxi Chen, Weixin Gai, Jianhua Feng","doi":"10.1109/EDSSC.2017.8126495","DOIUrl":null,"url":null,"abstract":"This paper presents a clock-feedthrough compensation technique for bootstrapped switches. The proposed technique utilizes a dummy transistor to generate a reverse voltage, which compensates the input-dependent error caused by clock feedthrough effect of sampling switch. Simulation result shows the differential sampling error of bootstrapped switch reduces from 7.2mV to 1.4mV for the worst case, operating at 500MHz sampling speed in 55nm CMOS technology with a 300fF hold capacitor. The bootstrapped switch consumes 27uW power with only 1.5uW in compensation.","PeriodicalId":163598,"journal":{"name":"2017 International Conference on Electron Devices and Solid-State Circuits (EDSSC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"5","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2017 International Conference on Electron Devices and Solid-State Circuits (EDSSC)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/EDSSC.2017.8126495","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 5
Abstract
This paper presents a clock-feedthrough compensation technique for bootstrapped switches. The proposed technique utilizes a dummy transistor to generate a reverse voltage, which compensates the input-dependent error caused by clock feedthrough effect of sampling switch. Simulation result shows the differential sampling error of bootstrapped switch reduces from 7.2mV to 1.4mV for the worst case, operating at 500MHz sampling speed in 55nm CMOS technology with a 300fF hold capacitor. The bootstrapped switch consumes 27uW power with only 1.5uW in compensation.
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