| 单密勒电容补偿多级放大器的设计(英文) |
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| 引用本文： | 周玮,吴贵能,李儒章.单密勒电容补偿多级放大器的设计(英文)[J].重庆邮电学院学报(自然科学版),2009(5). |
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| 作者姓名： | 周玮 吴贵能 李儒章 |
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| 作者单位： | 重庆邮电大学;模拟集成电路国家级重点实验室; |
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| 摘 要： | 提出了一种结构简单的全新单密勒电容补偿技术。理论分析表明,该技术无需运放的跨导逐级增加就能获得良好的稳定特性,而且单位增益带宽大、补偿电容小。特别是每增加一级放大电路,就会增加一个左半平面零点,从而有效抵消新增加极点对运放稳定性的影响,因此该补偿技术很容易拓展到N(N>3)级联放大结构,这一特性有利于运放在实际中的运用。
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| 关 键 词： | 多级运算放大器 嵌套式密勒补偿 嵌套式Gm-C补偿 单密勒电容补偿 |
Single miller capacitor compensated multistage amplifier design |
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| ZHOU Wei,WU Gui-neng,LI Ru-zhang.Single miller capacitor compensated multistage amplifier design[J].Journal of Chongqing University of Posts and Telecommunications(Natural Sciences Edition),2009(5). |
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| Authors: | ZHOU Wei WU Gui-neng LI Ru-zhang |
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| Institution: | 1.Chongqing University of Posts and Telecommunications;Chongqing 400065;P.R.China;2.National Laboratory of Analog Integrated Circuits;Chongqing 400060;3.Sichuan Institute of Solid-state Circuits;China Electronics Technology Group Corporration;P.R.China |
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| Abstract: | A novel proposed single Miller compensation structure is presented.Theoretical analysis shows that it is easy to gain stability without satisfying the enhancement of the transconductors stage by stage.Moreover,gain-bandwidth is wide enough,and compensation capacitance is small.Especially,when added one amplify circuit,it will appear another LHP zero to counteract the new added pole.Therefore It is facile to expand to N-stage(N>3) amplify circuit,and could be widely applied in practice. |
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