{"title":"Design of AGC amplifier for CMOS Image Sensor","authors":"Guoyi Yu, Xuecheng Zou, Le Zhang, Qiming Zou, Meijun Zheng, Jianfu Zhong","doi":"10.1109/RFIT.2012.6401605","DOIUrl":null,"url":null,"abstract":"This paper designed an automatic gain control(AGC) amplifier for CMOS Image Sensor. The AGC amplifier adopts translinear variable gain amplifier (VGA) to realize a good linearity. It detects valley to present the strength of signal, and uses a succinct adjustment circuit to control the gain of VGA. A bandgap reference not needing start-up circuit was designed for the whole system. Simulated in SMIC 0.35um CMOS, it can compressed the dynamic range of 100kHz signal from 55.32dB to 7.36dB.","PeriodicalId":187550,"journal":{"name":"2012 IEEE International Symposium on Radio-Frequency Integration Technology (RFIT)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2012 IEEE International Symposium on Radio-Frequency Integration Technology (RFIT)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/RFIT.2012.6401605","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
This paper designed an automatic gain control(AGC) amplifier for CMOS Image Sensor. The AGC amplifier adopts translinear variable gain amplifier (VGA) to realize a good linearity. It detects valley to present the strength of signal, and uses a succinct adjustment circuit to control the gain of VGA. A bandgap reference not needing start-up circuit was designed for the whole system. Simulated in SMIC 0.35um CMOS, it can compressed the dynamic range of 100kHz signal from 55.32dB to 7.36dB.
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