DocumentCode
1170110
Title
A spread-spectrum clock generator with triangular modulation
Author
Chang, Hsiang-Hui ; Hua, I-Hui ; Liu, Shen-Iuan
Author_Institution
Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan
Volume
38
Issue
4
fYear
2003
fDate
4/1/2003 12:00:00 AM
Firstpage
673
Lastpage
676
Abstract
In this paper, a spread-spectrum clock generator (SSCG) with triangular modulation is presented. Only a divider and a programmable charge pump are added into a conventional clock generator to accomplish the spread-spectrum function. The proposed circuit has been fabricated in a 0.35-μm CMOS single-poly quadruple-metal process. The proposed SSCG can generate clocks of 66, 133, and 266 MHz with center spread ratios of 0.5%, 1%, 1.5%, 2%, and 2.5%. Experimental results confirm the theoretical analyses.
Keywords
CMOS digital integrated circuits; clocks; spread spectrum communication; waveform generators; 0.35 micron; 133 MHz; 266 MHz; 66 MHz; CMOS process; divider; programmable charge pump; spread-spectrum clock generator; triangular modulation; CMOS process; Charge pumps; Circuits; Clocks; Electromagnetic interference; Low pass filters; Phase locked loops; Signal generators; Spread spectrum communication; Voltage-controlled oscillators;
fLanguage
English
Journal_Title
Solid-State Circuits, IEEE Journal of
Publisher
ieee
ISSN
0018-9200
Type
jour
DOI
10.1109/JSSC.2003.809521
Filename
1190605
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