Proceedings of the IEEK Conference (대한전자공학회:학술대회논문집)

The Institute of Electronics and Information Engineers (대한전자공학회)
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A Design of Charge Pump with Up/Down Current Mismatch Compensation for PHS Application

Up/Down Current Mismatch 보상 기능을 추가한 Charge Pump 회로의 설계

  • Kim, Sang-Woo (Department of Electronic Engineering Konuk University) ;
  • Park, Joon-Sung (Department of Electronic Engineering Konuk University) ;
  • Ko, Dong-Hyun (Department of Electronic Engineering Konuk University) ;
  • Pu, Young-Gun (Department of Electronic Engineering Konuk University) ;
  • Lee, Kang-Yoon (Department of Electronic Engineering Konuk University)
  • Published : 2008.06.18
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Abstract

This paper presents a charge pump used in frequency synthesizer for PHS application. The up/down current mismatch of charge pump has a critical effect on the phase noise and spur performance in frequency synthesizer. Therefore, the mismatch compensation scheme is proposed in this paper. And, the measurement results show that the mismatch can be reduced below 5 %.

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