{"title":"Low frequency amplifiers for electret microphones","authors":"J. Silva-Martínez, J.S. Suner","doi":"10.1109/MWSCAS.1995.510266","DOIUrl":null,"url":null,"abstract":"In this paper two preamplifiers for capacitive sources are proposed. The topologies present very low distortion components (THD<1%), low offset voltages (less than 40 mvolts at the output) and low noise (less than 30 /spl mu/v/sub RMS/) The dynamic range of the topologies, is 57 dB and 63 dB, respectively. The power consumption is 21 /spl mu/watts for the first topology and 10 /spl mu/watts for the second one. The supply voltages employed are /spl plusmn/1.5 volts.","PeriodicalId":165081,"journal":{"name":"38th Midwest Symposium on Circuits and Systems. Proceedings","volume":"29 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1995-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"38th Midwest Symposium on Circuits and Systems. Proceedings","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/MWSCAS.1995.510266","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 2
Abstract
In this paper two preamplifiers for capacitive sources are proposed. The topologies present very low distortion components (THD<1%), low offset voltages (less than 40 mvolts at the output) and low noise (less than 30 /spl mu/v/sub RMS/) The dynamic range of the topologies, is 57 dB and 63 dB, respectively. The power consumption is 21 /spl mu/watts for the first topology and 10 /spl mu/watts for the second one. The supply voltages employed are /spl plusmn/1.5 volts.
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