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성과물

특허 검색
구분 출원국
출원년도 ~ 키워드

상세정보

등록 확산 스펙트럼 클럭 발생 회로

확산 스펙트럼 클럭 발생 회로
이미지 확대
발명자
윤석주, 권종기, 김귀동, 이희동
출원번호
13275753 (2011.10.18)
공개번호
20120105114 (2012.05.03)
등록번호
8446194 (2013.05.21)
출원국
미국
협약과제
10MB1700, 45nm급 혼성 SoC용 아날로그 회로기술, 권종기
초록
Provided is a spread spectrum clock generating circuit. The spread spectrum clock generating circuit includes: a phase detector receiving a reference frequency signal from the external and detecting a phase difference between the reference frequency signal and a frequency-divided signal; a voltage controlled oscillator outputting an oscillation signal corresponding to a detection result of the phase detector; a main divider generating the frequency-divided signal by dividing a frequency of the oscillation signal by a main dividing ratio; and a dividing ratio controller generating a variable count value, generating a sub dividing ratio by performing delta-sigma modulation according to the count value, and adjusting the main dividing ratio according to the sub dividing ratio.