{"title":"Design of CMOS Variable Gain Amplifier for DTV Tuners","authors":"Shu‐Jenn Yu, Yunfei Ye","doi":"10.1109/NSWCTC.2009.234","DOIUrl":null,"url":null,"abstract":"A CMOS variable gain amplifier (VGA) is designed, which is suitable for the turner of digital video broadcasting-cable(DVB-C). The amplifier is consists of exponential control circuit, amplifier circuit and common mode feedback circuit. The exponential circuit is presented by an approximate exponential function. The VGA is fabricated in 0.35um CMOS technology, and is simulated by Mentor’s circuit simulation tool Eldo. Simulation results show that the VGA core consumes 4.63mW at 3.3V supply voltage and has a gain range from 0 to 32dB. The frequency range is 46MHz~267MHz and noise figure is less than 10dB.","PeriodicalId":433291,"journal":{"name":"2009 International Conference on Networks Security, Wireless Communications and Trusted Computing","volume":"66 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2009-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"6","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2009 International Conference on Networks Security, Wireless Communications and Trusted Computing","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/NSWCTC.2009.234","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 CMOS variable gain amplifier (VGA) is designed, which is suitable for the turner of digital video broadcasting-cable(DVB-C). The amplifier is consists of exponential control circuit, amplifier circuit and common mode feedback circuit. The exponential circuit is presented by an approximate exponential function. The VGA is fabricated in 0.35um CMOS technology, and is simulated by Mentor’s circuit simulation tool Eldo. Simulation results show that the VGA core consumes 4.63mW at 3.3V supply voltage and has a gain range from 0 to 32dB. The frequency range is 46MHz~267MHz and noise figure is less than 10dB.
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