| 高精度SC PIPELINED ADC预放大锁存比较器的分析与设计 |
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| 引用本文： | 李扬,吴金荣,刘磊,林春,李晓潮,郭东辉.高精度SC PIPELINED ADC预放大锁存比较器的分析与设计[J].电子技术应用,2012,38(4):49-52. |
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| 作者姓名： | 李扬 吴金荣 刘磊 林春 李晓潮 郭东辉 |
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| 作者单位： | 1. 厦门大学电子工程系,福建厦门,361005
2. 厦门大学电子工程系,福建厦门361005 ;福建省集成电路设计工程技术研究中心,福建厦门361005 |
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| 基金项目： | 厦门市科技计划项目，福建省高校产学合作科技重大项目 |
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| 摘 要： | 提出了一种应用于开关电容流水线模数转换器的CMOS预放大锁存比较器。比较器采用了交叉耦合负载、PMOS/NMOS比例优化和电容中和技术。该结构大幅提高了比较器的速度并有效抑制了回馈噪声,减小了失调电压,可以作为Flash ADC应用于高精度开关电容流水线ADC。
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| 关 键 词： | 预放大锁存比较器 开关电容流水线ADC |
Analysis and design of preamplifier-latch comparator for high accuracy switched-capacitor pipelined ADC |
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| Li Yang
,
Wu Jinrong
,
Liu Lei
,
Lin Chun
,
Li Xiaochao
,
Guo Donghui.Analysis and design of preamplifier-latch comparator for high accuracy switched-capacitor pipelined ADC[J].Application of Electronic Technique,2012,38(4):49-52. |
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| Authors: | Li Yang Wu Jinrong Liu Lei Lin Chun Li Xiaochao Guo Donghui |
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| Affiliation: | 1,2 (1.Department of Electronic Engineering,Xiamen University,Xiamen 361005,China; 2.Fujian IC R&D Engineering Center,Xiamen 361005,China) |
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| Abstract: | To be compatible with switched capacitor pipelined ADC,a CMOS preamplifier-latch comparator is designed and well analyzed for high speed,low kick-back noise and low mismatch offset.The cross-coupled load,capacitor neutralization and the optimizing ratio of PMOS/NMOS are adopted in the comparator.Since the proposed architecture is effective for achieving,the comparator has been used in high accuracy switched-capacitor pipelined ADC as Flash ADC. |
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| Keywords: | preamplifier-latch comparator switched-capacitor pipeline ADC |
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