대한전기학회:학술대회논문집 (Proceedings of the KIEE Conference)

대한전기학회 (The Korean Institute of Electrical Engineers)
권호 표지

저전압 CMOS Gm-C 연속시간 필터 설계

The Design of Low Voltage CMOS Gm-C Continuous-Time Filter

  • 윤창훈 (우석대학교 정보통신컴퓨터공학부) ;
  • 정상훈 (전북대학교 전자정보공학부) ;
  • 최석우 (전북대학교 전자정보공학부)
  • Yun, Chang-Hun (Faculty of Information and Communications Engineering, Woosuk University) ;
  • Jung, Sang-Hoon (Faculty of Electronic and Information Engineering, Chonbuk National University) ;
  • Choi, Seok-Woo (Faculty of Electronic and Information Engineering, Chonbuk National University)
  • 발행 : 2001.11.24
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초록

In this paper, the Gm-C filter for low voltage and low power applications using a fully-differential transconductor is presented. The designed transconductor using the series composite transistors and the low voltage composite transistors has wide input range at low supply voltage. A negative resistor load (NRL) technology for high DC gain of the transconductor is employed with a common mode feedback(CMFB). As a design example, the third-order Elliptic lowpass filter is designed. The designed filter is simulated and examined by HSPICE using TSMC $0.35{\mu}m$ CMOS n-well parameters. The simulation results show 138kHz cutoff frequency and 11.05mW power dissipation with a 3.3V supply voltage.

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