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