https://scholars.lib.ntu.edu.tw/handle/123456789/325484
標題: | A 0.7-2-GHz self-calibrated multiphase delay-locked loop | 作者: | Hsiang-Hui Chang Jung-Yu Chang Chun-Yi Kuo SHEN-IUAN LIU |
關鍵字: | Calibration; Delay-locked loop (DLL); Multiphase | 公開日期: | 五月-2006 | 卷: | 41 | 期: | 5 | 起(迄)頁: | 1051-1061 | 來源出版物: | IEEE Journal of Solid-State Circuits | 摘要: | A 0.7-2-GHz precise multiphase delay-locked loop (DLL) using a digital calibration circuit is presented. Incorporating with the proposed digital calibration circuit, the mismatch-induced timing error among multiphase clocks in the proposed DLL can be self-calibrated. When the calibration procedure is finished, the digital calibration circuit can be turned off automatically to save power dissipations and reduce noise generations. A start controlled circuit is proposed to enlarge the operating frequency range of the DLL. Both the start-controlled circuit and the calibration circuit require an external reset signal to ensure the correctness of the calibration after temperature, operating frequency, and power supply voltage are settled. This DLL with the digital calibration circuit has been fabricated in a 0.18-μm CMOS process. The measured results show the DLL exhibits a lock range of 0.7-2 GHz while the peak-to-peak jitter and rms jitter is 18.9 ps and 2.5 ps at 2 GHz, respectively. When the calibration procedure is completed and the DLL operates at 1 GHz, the maximum mismatch-induced timing error among multiphase clocks is reduced from 20.4 ps (7.34 degree) to 3.5 ps (1.26 degree). © 2006 IEEE. |
URI: | http://scholars.lib.ntu.edu.tw/handle/123456789/325484 https://www.scopus.com/inward/record.uri?eid=2-s2.0-33646421401&doi=10.1109%2fJSSC.2006.874036&partnerID=40&md5=4f26fc884f90c6504b8e84183ffdcb3e |
ISSN: | 00189200 | DOI: | 10.1109/jssc.2006.874036 | SDG/關鍵字: | Delay-locked loop (DLL); Digital calibration circuits; Multiphase; Power dissipations; CMOS integrated circuits; Electric potential; Error analysis; Natural frequencies; Thermal effects; Calibration |
顯示於: | 電機工程學系 |
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