NDLI: A 64-MHz/spl sim/1920-MHz programmable spread-spectrum clock generator

Content Provider	IEEE Xplore Digital Library
Author	Hong-Yi Huang Sheng-Fen Ho Li-Wei Huang
Copyright Year	2005
Description	Author affiliation: Dept. of Electron. Eng., Fu-Jen Catholic Univ., Taiwan (Hong-Yi Huang; Sheng-Fen Ho; Li-Wei Huang)
Abstract	In this work, a spread-spectrum clock generator (SSCG) with triangular modulation is presented. The SSCG can be applied to most microprocessor systems. It has the effect of spreading the energy of frequency harmonics over a wider bandwidth, and hence reducing the amplitudes of the harmonics. The digital programming schemes are implemented in the charge pump current, the voltage controlled oscillator gain, the low-pass filter and the divider, to realize reusable silicon IP. The proposed SSCG can generate clocks of 64 MHz to 1920 MHz; with center spread modulation from /spl plusmn/1 MHz to /spl plusmn/50 MHz and the spread ratios equal to spread modulation divides output frequency. A test fabricated in a 0.18 /spl mu/m CMOS single-poly six-metal process is fabricated. The area is 1.01/spl times/1.14 mm/sup 2/ including the loop filter. It consumes 100 mW of power at 266 MHz. Attenuation as high as 17 dB is presented.
Starting Page	3363
Ending Page	3366
File Size	595933
Page Count	4
File Format	PDF
ISBN	0780388348
DOI	10.1109/ISCAS.2005.1465349
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-05-23
Publisher Place	Japan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Spread spectrum communication Clocks Power harmonic filters Digital modulation Modulation coding Microprocessors Frequency Bandwidth Charge pumps Voltage-controlled oscillators
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
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9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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