{"title":"驻极体麦克风用低频放大器","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":"{\"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}","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}
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.