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Analytical synthesis of low-sensitivity voltage-mode odd-nth-order OTA-C elliptic filter structure with the minimum number of components

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1 Author(s)
Chang, Chun-Ming ; Chung Yuan Christian Univ., Chung-Li

Though the current-mode odd-nth-order operational transconductance amplifier and capacitor (OTA-C) elliptic filter structure with the minimum number of active and passive components was presented recently, yet none of its counterpart, the voltage-mode ones, have been reported. After a new analytical synthesis method, namely, an innovative algebraic decomposition of a complex nth-order transfer function into n simple and feasible equations, the voltage-mode odd-nth-order OTA-C elliptic filter structure with the minimum number of components is proposed in this paper. The Hspice simulation with 0.35 mum process for a voltage-mode third-order OTA-C elliptic low-pass filter, employing only four OTAs and three grounded capacitors, validates not only precise filtering parameters but low sensitivity and low power consumption performances.

Published in:

Circuits and Systems, 2007. MWSCAS 2007. 50th Midwest Symposium on

Date of Conference:

5-8 Aug. 2007

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