{"title":"A CMOS Low-Distortion Variable Gain Amplifier with Exponential Gain Control","authors":"Li Yin, Ting-Hua Yun, Jian-hui Wu, L. Shi","doi":"10.1109/ASSCC.2006.357929","DOIUrl":null,"url":null,"abstract":"In this paper, a CMOS low-distortion variable gain amplifier with exponential gain control is developed by utilizing a transconductance linearization scheme. The VGA is composed of a VGA core based on current-steering structure, an exponential voltage generator based on transfer characteristics of differential pair, and a stage of fixed gain amplifier. The proposed VGA circuit was verified in 0.25 mum CMOS technology, the measurement results show a total gain control range of 40 dB, the 3-dB bandwidth is 100 MHz, and a -58.5dBc third-order inter-modulation distortion at differential output of 2 Vpp are obtained, the noise figure at maximum gain is 8.6 dB.","PeriodicalId":142478,"journal":{"name":"2006 IEEE Asian Solid-State Circuits Conference","volume":"15 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2006-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"4","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2006 IEEE Asian Solid-State Circuits Conference","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ASSCC.2006.357929","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 4
Abstract
In this paper, a CMOS low-distortion variable gain amplifier with exponential gain control is developed by utilizing a transconductance linearization scheme. The VGA is composed of a VGA core based on current-steering structure, an exponential voltage generator based on transfer characteristics of differential pair, and a stage of fixed gain amplifier. The proposed VGA circuit was verified in 0.25 mum CMOS technology, the measurement results show a total gain control range of 40 dB, the 3-dB bandwidth is 100 MHz, and a -58.5dBc third-order inter-modulation distortion at differential output of 2 Vpp are obtained, the noise figure at maximum gain is 8.6 dB.
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