{"title":"一种用于无线通信的带直流偏置校正环路的CMOS变增益放大器","authors":"Zhih-Siou Cheng, J. Bor","doi":"10.1109/VDAT.2006.258115","DOIUrl":null,"url":null,"abstract":"A 64 dB gain range VGA with DC offset calibration loop is proposed in this work. This VGA adopts the degeneration type amplifier to vary voltage gain and uses the super-source-follower input stage to enhance the linearity. A digital-based DC offset calibration loop is also designed to solve the DC offset problem. An experimental chip is fabricated in 0.18 mum process. With 2 dB step, the gain error is less than 0.8 dB and the output DC offset is less than 100mV at maximum gain setting. The total power consumption is 11 mW","PeriodicalId":356198,"journal":{"name":"2006 International Symposium on VLSI Design, Automation and Test","volume":"57 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2006-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"13","resultStr":"{\"title\":\"A CMOS Variable Gain Amplifier with DC Offset Calibration Loop for Wireless Communications\",\"authors\":\"Zhih-Siou Cheng, J. Bor\",\"doi\":\"10.1109/VDAT.2006.258115\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"A 64 dB gain range VGA with DC offset calibration loop is proposed in this work. This VGA adopts the degeneration type amplifier to vary voltage gain and uses the super-source-follower input stage to enhance the linearity. A digital-based DC offset calibration loop is also designed to solve the DC offset problem. An experimental chip is fabricated in 0.18 mum process. With 2 dB step, the gain error is less than 0.8 dB and the output DC offset is less than 100mV at maximum gain setting. The total power consumption is 11 mW\",\"PeriodicalId\":356198,\"journal\":{\"name\":\"2006 International Symposium on VLSI Design, Automation and Test\",\"volume\":\"57 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2006-04-26\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"13\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2006 International Symposium on VLSI Design, Automation and Test\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/VDAT.2006.258115\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2006 International Symposium on VLSI Design, Automation and Test","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/VDAT.2006.258115","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
A CMOS Variable Gain Amplifier with DC Offset Calibration Loop for Wireless Communications
A 64 dB gain range VGA with DC offset calibration loop is proposed in this work. This VGA adopts the degeneration type amplifier to vary voltage gain and uses the super-source-follower input stage to enhance the linearity. A digital-based DC offset calibration loop is also designed to solve the DC offset problem. An experimental chip is fabricated in 0.18 mum process. With 2 dB step, the gain error is less than 0.8 dB and the output DC offset is less than 100mV at maximum gain setting. The total power consumption is 11 mW
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