{"title":"具有指数增益控制的CMOS低失真变增益放大器","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":"{\"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}","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
摘要
本文采用跨导线性化方法，设计了一种指数增益控制的CMOS低失真变增益放大器。该VGA由基于电流转向结构的VGA核、基于差分对传输特性的指数电压发生器和定增益放大器级组成。在0.25 μ m CMOS技术上对所提出的VGA电路进行了验证，测量结果表明，总增益控制范围为40 dB, 3-dB带宽为100 MHz，差分输出2 Vpp时三阶互调失真为-58.5dBc，最大增益时噪声系数为8.6 dB。
A CMOS Low-Distortion Variable Gain Amplifier with Exponential Gain Control
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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