{"title":"Active-feedback frequency compensation for low-power multi-stage amplifiers","authors":"Hoi Lee, P. Mok","doi":"10.1109/CICC.2002.1012831","DOIUrl":null,"url":null,"abstract":"This paper describes a novel active-feedback frequency compensation (AFFC) technique for low-power multi-stage amplifiers. With a high-speed active feedback block, the proposed compensation technique significantly improves both the frequency and the transient responses of the amplifier. Implemented by a standard 0.8/spl mu/m CMOS process, a three-stage AFFC amplifier achieves 100dB gain, 4.5MHz gain-bandwidth product, 65/spl deg/ phase margin and 1.5V//spl mu/s slew rate with 0.4mW power consumption when driving a 100pF capacitive load.","PeriodicalId":209025,"journal":{"name":"Proceedings of the IEEE 2002 Custom Integrated Circuits Conference (Cat. No.02CH37285)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2002-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"13","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Proceedings of the IEEE 2002 Custom Integrated Circuits Conference (Cat. No.02CH37285)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/CICC.2002.1012831","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 13
Abstract
This paper describes a novel active-feedback frequency compensation (AFFC) technique for low-power multi-stage amplifiers. With a high-speed active feedback block, the proposed compensation technique significantly improves both the frequency and the transient responses of the amplifier. Implemented by a standard 0.8/spl mu/m CMOS process, a three-stage AFFC amplifier achieves 100dB gain, 4.5MHz gain-bandwidth product, 65/spl deg/ phase margin and 1.5V//spl mu/s slew rate with 0.4mW power consumption when driving a 100pF capacitive load.
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