| Design of a CMOS Adaptive Charge Pump with Dynamic Current Matching |
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| 引用本文： | ZHANG Tao ZOU Xuecheng ZHAO Guangzhou SHEN Xubang. Design of a CMOS Adaptive Charge Pump with Dynamic Current Matching[J]. 武汉大学学报:自然科学英文版, 2006, 11(2): 405-408. DOI: 10.1007/BF02832132 |
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| 作者姓名： | ZHANG Tao ZOU Xuecheng ZHAO Guangzhou SHEN Xubang |
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| 作者单位： | [1]Institute of Pattern Recognition and Artifieal Intelligence, Huazhong University of Science and Technology, Wuhan 430074, Hubei, Chinas [2]Department of Electronic Science and Technology, Huazhong University of Science and Tchnology, Wuhan 430074, Hubei, China [3]Xi＇an Microelectronic Technology Institute, Xi＇an 710054, Shaanxi, China |
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| 基金项目： | Supported by the National Natural Science Foundation of China （F60135020） |
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| 摘 要： | A novel structure for a charge pump circuit is proposed, in which the charge-pump （CP） current can adaptively regulated according to phase-locked loops （PLL） frequency synthesis demand. The current follow technology is used to make perfect current matching characteristics, and the two differential inverters are implanted to increase the speed of charge pump and decrease output spur due to theory of low voltage difference signal. Simulation results, with 1st silicon 0. 25μm 2. 5 V complementary metal-oxide-semiconductor （CMOS） mixed-signal process, show the good current matching characteristics regardless of the charge pump output voltages.
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| 关 键 词： | 锁相环路 进料泵 相位补偿 相位频率探测器 电流匹配 |
| 文章编号： | 1007-1202（2006）02-0405-04 |
| 收稿时间： | 2005-04-19 |
Design of a CMOS adaptive charge pump with dynamic current matching |
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| Zhang Tao,Zou Xuecheng,Zhao Guangzhou,Shen Xubang. Design of a CMOS adaptive charge pump with dynamic current matching[J]. Wuhan University Journal of Natural Sciences, 2006, 11(2): 405-408. DOI: 10.1007/BF02832132 |
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| Authors: | Zhang Tao Zou Xuecheng Zhao Guangzhou Shen Xubang |
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| Affiliation: | (1) Institute of Pattern Recognition and Artifical Intelligence, Huazhong University of Science and Technology, 430074 Wuhan, Hubei, China;(2) Department of Electronic Science and Technology, Huazhong University of Science and Technology, 430074 Wuhan, Hubei, China;(3) Xi an Microelectronic Technology Institute, 710054 Xi’ an, Shaanxi, China |
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| Abstract: | A novel structure for a charge pump circuit is proposed, in which the charge-pump (CP) current can adaptively regulated according to phase-locked loops (PLL) frequency synthesis demand. The current follow technology is used to make perfect current matching characteristics, and the two differential inverters are implanted to increase the speed of charge pump and decrease output spur due to theory of low voltage difference signal. Simulation results, with 1st silicon 0. 25 μm 2.5 V complementary metal-oxide-semiconductor (CMOS) mixed-signal process, show the good current matehing characteristics regardless of the charge pump output voltages. Foundation item: Supported by the National Natural Science Foundation of China (F60135020) Biography: ZHANG Tao (1967), male, Associate professor, Ph. D. candidate, research direction, signal processing and digital/analog mixed integrated circuits design. |
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| Keywords: | phase-locked loop charge pump phase offset phase frequency detector current matching low voltage difference signal |
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