標題: A 8 Phases 192 MHz Crystal-Less Clock Generator with PVT Calibration
作者: Lu, Ting-Chou
Ker, Ming-Dou
Zan, Hsiao-Wen
Liu, Jen-Chieh
Lee, Yu
電機學院
電子工程學系及電子研究所
光電工程學系
College of Electrical and Computer Engineering
Department of Electronics Engineering and Institute of Electronics
Department of Photonics
關鍵字: crystal-less clock generator;multi-phase output;digital power application;process;voltage and temperature (PVT) calibration
公開日期: Jan-2017
摘要: A multi-phase crystal-less clock generator (MPCLCG) with a process-voltage-temperature (PVT) calibration circuit is proposed. It operates at 192 MHz with 8 phases outputs, and is implemented as a 0.18pm CMOS process for digital power management systems. A temperature calibrated circuit is proposed to align operational frequency under process and supply voltage variations. It occupies an area of 65 mu m x 75 mu m and consumes 1.1 mW with the power supply of 1.8 V. Temperature coefficient (TC) is 69.5 ppm/degrees C from 0 to 100 degrees C, and 2-point calibration is applied to calibrate PVT variation. The measured period jitter is a 4.58-ps RMS jitter and a 34.55-ps peak-to-peak jitter (P2P jitter) at 192 MHz within 12.67k-hits. At 192 MHz, it shows a 1-MHz-offset phase noise of -102 dBc/Hz. Phase to phase errors and duty cycle errors are less than 5.5% and 4.3%, respectively.
URI: http://dx.doi.org/10.1587/transfun.E100.A.275
http://hdl.handle.net/11536/133325
ISSN: 1745-1337
DOI: 10.1587/transfun.E100.A.275
期刊: IEICE TRANSACTIONS ON FUNDAMENTALS OF ELECTRONICS COMMUNICATIONS AND COMPUTER SCIENCES
Volume: E100A
Issue: 1
起始頁: 275
結束頁: 282
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