NEW HIGH-ORDER ALLPASS FILTERS USING TOTA ELEMENTS

Kamil Vrba - Josef Čajka - Lukáš Matějíček

   A differential input triple-output transconductance amplifier (TOTA) as a universal active device is defined. New networks for the high-order allpass filter design employing TOTA devices are presented. Two design procedures (multiple-loop feedback cascade approach and pole-zero mirroring technique) are described. Semirelative sensitivities to passive component tolerances of both proposed filters are compared.

Keywords: transconductance amplifier, allpass filters, semirelative sensitivity

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