A 60 to 200MHz SSCG with approximate Hershey-Kiss modulation profile in 0.11µm CMOS

Author

Seung-Wook Oh ; Hyung-Min Park ; Joon-Hyup Seo ; Jae-Young Jang ; Gi-Yeol Bae ; Jin-Ku Kang

Author_Institution

Dept. of Electron. Eng., Inha Univ., Incheon, South Korea

fYear

2012

fDate

4-7 Nov. 2012

Firstpage

423

Lastpage

426

Abstract

This paper describes a spread spectrum clock generator (SSCG) circuit generating an approximate Hershey- Kiss modulation profile by dual modulators. The dual modulators consist of a slope modulator and a division modulator. The proposed scheme generates various modulation slopes to achieve a non-linear modulation profile. Since the modulators are implemented by the simple digital blocks, it can be modified upon different applications. The proposed SSCG covers output frequency of 60MHz to 200MHz with a 30KHz modulation frequency designed with a 0.11μm CMOS technology. The spread ratios and modulation positions (down, up, center) also can be controlled.

Keywords

CMOS integrated circuits; clocks; delta-sigma modulation; modulators; CMOS technology; Hershey-Kiss modulation profile; SSCG; division modulator; dual modulators; frequency 60 MHz to 200 MHz; modulation position; nonlinear modulation profile; size 0.11 mum; slope modulator; spread ratio; spread spectrum clock generator circuit; Clocks; Frequency modulation; Generators; Phase locked loops; Radiation detectors; Sigma delta modulation; Hershey-Kiss Profile; Phase Locked Loop (PLL); SSCG; Sigma-Delta Modulator;

fLanguage

English

Publisher

ieee

Conference_Titel

SoC Design Conference (ISOCC), 2012 International

Conference_Location

Jeju Island

Print_ISBN

978-1-4673-2989-7

Electronic_ISBN

978-1-4673-2988-0

Type

conf

DOI

10.1109/ISOCC.2012.6406886

Filename

6406886