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A Design of Bandpass Filter for Body Composition Analyzer  

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)
Publication Information
Journal of the Institute of Electronics Engineers of Korea SC / v.42, no.5, 2005 , pp. 43-50 More about this Journal
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.
Keywords
Bandpass filter; Sub-threshold region; Body compositon analyzer;
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