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| 单密勒电容补偿多级放大器的设计 | |
| 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[J].重庆邮电大学学报(自然科学版),2009,21(5):617-621. |
| 作者姓名： | 周玮 吴贵能 李儒章 |
| 作者单位： | 1. 重庆邮电大学,重庆,400065;模拟集成电路国家级重点实验室,重庆,400060 2. 重庆邮电大学,重庆,400065 3. 模拟集成电路国家级重点实验室,重庆,400060 |
| 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. |
| 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 |
| 收稿时间： | 8/4/2008 12:00:00 AM |
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,2009,21(5):617-621. | |
| Authors: | ZHOU Wei WU Gui-neng LI Ru-zhang |
| Institution: | Chongqing University of Posts and Telecommunications, Chongqing 400065, P. R. China |
| 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. |
| Keywords: | Multi-stage op amp nested Miller compensation (NMC) nested Gm-C compensation (NGCC) single Miller compensation (SMC) |
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