Proceedings of the IEEK Conference (대한전자공학회:학술대회논문집)

The Institute of Electronics and Information Engineers (대한전자공학회)
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A Novel 800mV Beta-Multiplier Reference Current Source Circuit for Low-Power Low-Voltage Mixed-Mode Systems

저전압 저전력 혼성신호 시스템 설계를 위한 800mV 기준전류원 회로의 설계

  • Kwon, Oh-Jun (Semiconductor Lab, Div. of Electronics & Computer Engineering,Hanyang University) ;
  • Woo, Son-Bo (Semiconductor Lab, Div. of Electronics & Computer Engineering,Hanyang University) ;
  • Kim, Kyeong-Rok (Semiconductor Lab, Div. of Electronics & Computer Engineering,Hanyang University) ;
  • Kwack, Kae-Dal (Semiconductor Lab, Div. of Electronics & Computer Engineering,Hanyang University)
  • 권오준 (한양대학교 전자전기컴퓨터공학부 반도체연구실) ;
  • 우선보 (한양대학교 전자전기컴퓨터공학부 반도체연구실) ;
  • 김경록 (한양대학교 전자전기컴퓨터공학부 반도체연구실) ;
  • 곽계달 (한양대학교 전자전기컴퓨터공학부 반도체연구실)
  • Published : 2008.06.18
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Abstract

In this paper, a novel beta-multiplier reference current source circuit for the 800mV power-supply voltage is presented. In order to cope with the narrow input common-mode range of the OpAmp in the reference circuit, shunt resistive voltage divider branches were deployed. High gain OpAmp was designed to compensate intrinsic low output resistance of the MOS transistors. The proposed reference circuit was designed in a standard 0.18um CMOS process with nominal Vth of 420mV and -450mV for nMOS and pMOS transistor respectively. The total power consumption including OpAmp is less than 50uW.

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