| Flash A/D转换器中火花码与亚稳态现象研究 |
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| 引用本文： | 周蕾,李冬梅.Flash A/D转换器中火花码与亚稳态现象研究[J].电路与系统学报,2009,14(2). |
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| 作者姓名： | 周蕾 李冬梅 |
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| 作者单位： | 清华大学,电子工程系,北京,100084 |
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| 摘 要： | 全并行模数转换器(FlashA/D转换器)结构简单,转换速度快,但电路规模较大,精度受到限制.FlashA/D转换器具有"亚稳态","火花码"等非理想特性,严重的影响了它的工作性能.本文较系统地介绍和分析了已有的一些抑制"火花码"与"亚稳态"的方法.并提出一种基于概率统计的算法,通过SIMULINK软件进行仿真,对各种编码电路对输出误码率的影响进行了研究和量化对比,结论表明wlallace Trec编码结构对"火花码"及"亚稳态"的抑制能力最强.
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| 关 键 词： | Flash A/D转换器 火花码 亚稳态 |
Study on sparkle and metastability in Flash A/D convertor |
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| ZHOU Lei,LI Dong-mei.Study on sparkle and metastability in Flash A/D convertor[J].Journal of Circuits and Systems,2009,14(2). |
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| Authors: | ZHOU Lei LI Dong-mei |
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| Affiliation: | ZHOU Lei,LI Dong-mei(Department of Electronic Engineering,Tsinghua University,Beijing 100084,China) |
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| Abstract: | Flash A/D converter is widely used with its high speed and simple structure.,however,it may call for a large size when the precision is strictly required.The noise caused by sparkle in thermometer code and metastability deeply affects the performance of Flash A/D converters and depends upon the chosen coding.In this paper,the ways to avert sparkle and metastability are described.A procedure for comparing the performance of different encoders are introduced and actualized with SIMULINK.The result of the comp... |
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| Keywords: | Flash A/D converter sparkle metastability |
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