센서학회지 (Journal of Sensor Science and Technology)

  • 제18권4호
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  • Pages.280-285
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  • 2009
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  • 1225-5475(pISSN)
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  • 2093-7563(eISSN)
한국센서학회 (The Korean Sensors Society)
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센서 신호 처리를 위한 온도 보상 기능을 가진 2단 CMOS 연산 증폭기

A 2-stage CMOS operational amplifier with temperature compensation function for sensor signal processing

  • 하상민 (경북대학교 전자전기컴퓨터학부) ;
  • 서상호 (경북대학교 전자전기컴퓨터학부) ;
  • 신장규 (경북대학교 전자전기컴퓨터학부)
  • Ha, Sang-Min (School of Electrical Engineering and Computer Science, Kyungpook National University) ;
  • Seo, Sang-Ho (School of Electrical Engineering and Computer Science, Kyungpook National University) ;
  • Shin, Jang-Kyoo (School of Electrical Engineering and Computer Science, Kyungpook National University)
  • 발행 : 2009.07.31
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초록

In this paper, we designed a 2-stage CMOS operational amplifier with temperature compensation function using 2-poly 4-metal 0.35 $\mu$m standard CMOS technology. Using two bias circuits, the positive temperature coefficient(PTC) and the negative temperature coefficient(NTC) of the bias circuit are canceled out each other. When reference current circuit is simulated that it has a temperature coefficient of -150 ppm/$^{\circ}C$ with a temperature change from 0 $^{\circ}C$ to 120 $^{\circ}C$. Also the proposed circuit has a temperature coefficient of -0.011 dB/$^{\circ}C$ of DC open loop gain with the same temperature range.

키워드

참고문헌

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피인용 문헌

  1. Design of the low noise CMOS LDO regulator for a low power capacitivesensor interface vol.19, pp.1, 2010, https://doi.org/10.5369/JSST.2010.19.1.025