Title :
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
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;
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
DOI :
10.1109/ISOCC.2012.6406886
