Bohui Xiao, Spencer Leuenberger, Praveen Kumar Venkatachala, A. ElShater, C. Lee, Michael Oatman, U. Moon
{"title":"Power Optimized Comparator Selecting Method For Stochastic ADC","authors":"Bohui Xiao, Spencer Leuenberger, Praveen Kumar Venkatachala, A. ElShater, C. Lee, Michael Oatman, U. Moon","doi":"10.1109/ISCAS.2018.8351093","DOIUrl":null,"url":null,"abstract":"This work presents a power saving design method for stochastic flash analog-to-digital converters (ADCs). Stochastic ADCs use the offset noise distribution generated by mismatch to estimate the input signal. By analyzing the characteristic of the noise distribution, some of comparator cells in the stochastic ADC are unused for a given input range. The proposed comparator selection method allows the unused comparators to be powered down without affecting performance of the ADC. A behavioral model of the stochastic ADC is used to simulate and compare the power consumption of the ADC with and without the proposed technique.","PeriodicalId":6569,"journal":{"name":"2018 IEEE International Symposium on Circuits and Systems (ISCAS)","volume":"51 1","pages":"1-4"},"PeriodicalIF":0.0000,"publicationDate":"2018-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2018 IEEE International Symposium on Circuits and Systems (ISCAS)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ISCAS.2018.8351093","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
This work presents a power saving design method for stochastic flash analog-to-digital converters (ADCs). Stochastic ADCs use the offset noise distribution generated by mismatch to estimate the input signal. By analyzing the characteristic of the noise distribution, some of comparator cells in the stochastic ADC are unused for a given input range. The proposed comparator selection method allows the unused comparators to be powered down without affecting performance of the ADC. A behavioral model of the stochastic ADC is used to simulate and compare the power consumption of the ADC with and without the proposed technique.
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