Journal of the Korean Institute of Telematics and Electronics B (전자공학회논문지B)

The Institute of Electronics and Information Engineers (대한전자공학회)
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VLSIs for the MAC TV System - Part III. A Data and Clock Recovery Circuit

MAC 방식 TV 시스템용 IC의 설계 - III. 신호 및 클럭 복원기

  • Moon, Yong (Department of Electronics Engineering and ISRC Seoul National University) ;
  • Jeong, Deog-Kyoon (Department of Electronics Engineering and ISRC Seoul National University)
  • 문용 (서울대학교 전자공학과 및 반도체공동연구소) ;
  • 정덕균 (서울대학교 전자공학과 및 반도체공동연구소)
  • Published : 1995.12.01
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Abstract

A data and clock recovery integrated circuit for MAC (Multiplexed Analog Component) TV standard is described. The chip performs the recovery of a system clock from a digitally encoded voice signal, clamping of a video signal for DC-level restoration, and precise gain control of a video signal in the presence of a large amplitude variation. A PLL (Phase Locked Loop) is used for timing recovery and a new gain control circuit is proposed which enhances its accuracy and dynamic range by employing two identical four-quadrant analog multipliers. The chip is designed in full custom with 1.5um BiCMOS technology, and layout verification is completed by post-simulation with the extracted circuit.

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