High-Input Impedance Voltage-Mode Multifunction Filter

This paper proposes a high-input impedance voltage-mode (VM) multifunction biquad filter which employs three current-feedback amplifiers (CFAs), resistors, and two grounded capacitors. The proposed VM has single-input triple-output can realize non-inverting low-pass (NLP), inverting band-pass (IBP), band-stop (NBS) voltage responses at the same time without increasing component selection. enjoys orthogonal tunability of angular frequency quality factor also provides advantage using only capacitors, low active/passive sensitivity. performance is verified through its hardware implementation OrCAD PSpice simulation based on AD844-type CFAs. circuit analysis, sensitivity NLP, IBP, NBS are shown in this paper. presents method to effectively reduce active passive components, maintain good performance, costs.