Journal of the Institute of Electronics Engineers of Korea SC (전자공학회논문지SC)

The Institute of Electronics and Information Engineers (대한전자공학회)
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A Design of Bandpass Filter for Body Composition Analyzer

체성분 측정기용 대역통과 필터 설계

  • Bae, Sung-Hoon (Department of Computer Engineering, Seokyeong University) ;
  • Cho, Sang-Ik (Department of Computer Engineering, Seokyeong University) ;
  • Lim, Shin-Il (Department of Computer Engineering, Seokyeong University) ;
  • Moon, Byoung-Sam (Bio-engineering R&D Center, Biospace Co., Ltd)
  • 배성훈 (서경대학교 컴퓨터공학과) ;
  • 조상익 (서경대학교 컴퓨터공학과) ;
  • 임신일 (서경대학교 컴퓨터공학과) ;
  • 문병삼 ((주)바이오스페이스 바이오공학 연구소)
  • Published : 2005.09.25
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Abstract

This paper describes some IC(integrated circuits) design and implementation techniques of low power multi-band Gm-C bandpass filter for body composition analyzer. Proposed BPF(bandpass filter) can be selected from three bands(20 KHz, 50 KHz, 100 KHz) by control signal. To minimize die area, a simple center frequency tuning scheme is used. And to reduce power consumption, operational transconductance amplifier operated in the sub-threshold region is adopted. The proposed BPF is implemented with 0.35 um 2-poly 3-metal standard CMOS technology Chip area is $626.42um\;{\times}\;475.8um$ and power consumption is 700 nW@100 KHz.

본 논문에서는 체성분 측정기용 저 전력 다중 대역을 가지는 Gm-C 대역통과 필터의 IC화 설계방법에 대해 기술하였다. 제안된 대역통과 필터는 제어 신호에 의해 3개의 중심 주파수(20 KHz, 50 KHz, 100 KHz)에서 동작한다. 칩 면적을 최소화하기 위해 간단한 주파수 튜닝회로가 사용되었으며 전력 소모를 줄이기 위해 OTA(operational transconductance amplifier)가 sub-threshold region에서 동작한다. 제안된 대역통과 필터는 0.35 um 2-poly 3-metal 표준 CMOS 공정을 이용하여 구현하였다. 칩 면적은 $626.42um\;{\times}\;475.8um$이며 전력 소모는 주파수가 100 KHz일 때 700 nW이다.

Keywords

References

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