전자공학회논문지C (Journal of the Korean Institute of Telematics and Electronics C)

대한전자공학회 (The Institute of Electronics and Information Engineers)
권호 표지

CMOS 공정을 이용한 15MHz, 2.6mW, 6차 대역통과 Gm-C 필터

A CMOS 15MHz, 2.6mW, sixth-order bandpass Gm-C filter

  • 유창식 (서울대학교 전기공학부 집적시스템연구실) ;
  • 정기욱 (서울대학교 전기공학부 집적시스템연구실) ;
  • 김원찬 (서울대학교 전기공학부 집적시스템연구실)
  • 발행 : 1997.06.01
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초록

Low-voltage, low-power gm-C filter utilizing newly dveloped operational transconductance amplifier (OTA) is described in this paper. The OTA has only two MOS transistors in saturation region between $V_{DD}$ and GND, and thus low voltage operation is possible. To improve the linearity, the OTA is made differential. Common mode feedback, essential in differential circuit, requires no additional implemented in $0.8\mu\textrm{m}$ CMOS process, and the center frequency can be controlled from 15MHz with 3.0V single power supply.

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