| 高精度片上匹配电阻的设计实现 |
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| 引用本文： | 张防震,杨森,李浩亮.高精度片上匹配电阻的设计实现[J].商丘职业技术学院学报,2009,8(5):63-66. |
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| 作者姓名： | 张防震 杨森 李浩亮 |
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| 作者单位： | 1. 郑州大学信息工程院,河南,郑州,450001
2. 西北大学物理系,陕西,西安,710069 |
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| 基金项目： | 国家自然科学基金项目 |
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| 摘 要： | 基于负反馈动态调整原理和数字化的模拟电路设计技术,本文设计了一种可调多晶硅电阻条的有源高精度片上匹配电阻电路.使用TSMC的CMOS0.25um混合信号模型,在Cadence软件环境下用spectre仿真器模拟,结果表明在500M bps的高速时钟信号作用下,所设计的匹配电阻阻值稳定在44.3Ω,45.6Ω]范围内,最大稳定时间6μs,平均误差为±1.45%,所设计电阻平均变化范围为45Ω±1.45%,最大误差范围1.56%,高于45Ω±10%的高速串行接口协议要求.
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| 关 键 词： | 高速串行接口 高精度片上匹配电阻 负反馈 数字化 模拟技术 |
A Novel High--Precision on Chip Termination Resistor Circuit |
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| Institution: | YANG Se, ZHANG Fang- zhen2, LI Hao- liang( 1. College of Information ＆ Engineering, Zhengzhou University. , Zhengzhou 450001, China; 2. Physics Department, Northwest University, Xi＇an 710069 China) |
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| Abstract: | It was proposed a novel high - precision on chip termination resistor circuit in agreement with high - speed serial hnk. tnvolved in nega- tive - feedback dynamic adjustment and digital - based analog circuit - design technology, this paper brings forward an active high - precision on chip termination resistor circuit topology based upon adjustable polycrystalline - silicon resistance branches. Using Cadence＇s SPECTRE software and TSMC＇s library of 0. 25um mixed - signal CMOS model, the simulation results revealed that the value of termination resistor in this paper ranged within 44.3Ω, 45. 6Ω], meanwhile the maximum time leveling off is less than 6μs, the average error is ± 1.45%, maximum error range within 1.56%, meet with the nrotocol reouirement of 45Ω ± 10%. |
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| Keywords: | high-speed serial link high-precision on chip termination resistor negative-feedback adjustment digital-based analog |
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