Journal of the Korean Institute of Telematics and Electronics B (전자공학회논문지B)

The Institute of Electronics and Information Engineers (대한전자공학회)
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Realization of 3.3V active low-pass filter using improved continuous-time current-mode CMOS integrator

개선된 연속시간 전류모드 CMOS 적분기를 이용한 3.3V 능동 저역필터 구현

  • 방준호 (전북대학교 전기공학과) ;
  • 조성익 (전북대학교 전기공학과) ;
  • 이성룡 (군산대학교 제어계측공학과) ;
  • 권오신 (군산대학교 제어계측공학과) ;
  • 신홍규 (원광대학교 전자공학과)
  • Published : 1996.04.01
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Abstract

In this paper, a new continuous-time current-mode integrator as basic building block of the low-voltage analog current-mode active filters was proposed. Compared to the current-mode integrator which was proposed by Zele, the proposed current-mode integrator had higher unity gain frequency and output impedance in addition to lower power dissipation. And also, a current-mode third-order lowpass active filter was designed with the proposed current-mode integrator. The designed circuits were fabricated using the ORBIT's 1.2.mu.m double-poly double-metal CMOS n-well process. The experimental resutls of the active filter designed and fabricated for this research have shown that it has the performance of 44.5MHz cutoff frequency, 3.3mW power dissipation and the third-order active filter area was 0.12mm$^{2}$.

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