A voltage-mode three-input one-output multifunction filter using single FDCCII

This paper presents a new three-input one-output voltage-mode multifunction filter using one fully differential current conveyor as an active element, and two capacitors, three resistors as passive components. The use of only one single active device is the main advantage of this paper. The proposed circuit provides high-pass, band-pass, low-pass, band-stop and all-pass voltage responses into a single topology. The natural frequency and the quality factor of the filter can be controlled by setting the value of passive components. The filter is absent from the inverting-type input signal requirement for realizing all filtering functions and also low passive sensitivity. The characteristics of the proposed filter are verified by PSPICE simulators.