Journal of the Korean Institute of Telematics and Electronics (대한전자공학회논문지)

The Institute of Electronics and Information Engineers (대한전자공학회)
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CMOS Operational Amplifiers for Switched Capacitor Filter Application

CMOS 공정을 사용한 정밀능동필터용 연산증폭기

  • Yang, Kyung Hoon (Dept. of Elec. Eng., Seoul Natl. Univ.) ;
  • Kim, Wonchan (Dept. of Elec. Eng., Seoul Natl. Univ.) ;
  • Lee, Choong Woong (Dept. of Elec. Eng., Seoul Natl. Univ.)
  • 양경훈 (서울대학교 전자공학과) ;
  • 김원찬 (서울대학교 전자공학과) ;
  • 이충웅 (서울대학교 전자공학과)
  • Published : 1986.04.01
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Abstract

This paper studies the design of a CMOS operational amplifier for the switched capacitor filter by computer simulation, and presents the results of measurement. The operational amplifier composed of two stages is fabricated in the CMOS digital process. The DC voltage gain of the operational amplifier is 66dB, and the unity gain bandwidth is 833kHz. These results satisfy the performance requirmance requirements for the operational amplifier of the switched capacitor filter.

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