REALIZATION OF CONTINUOUS TIME FILTER USING OFCC

Abstract

In this thesis operational floating current conveyor (OFCC), a current mode building block is studied and its application as continuous filter has been investigated. There modes of filter presented in this thesis using OFCC current mode, trans-impedance mode, voltage mode and TA mode. All these filters employ three OFCCs and two grounded capacitors. The current mode and trans-impedance mode filters use two grounded resistors whereas an additional grounded resistor is used in trans-admittance mode and voltage mode filters. The grounded resistor is implemented using MOS based structure thereby adding electronic tunability to filter parameters. Further low pass(LP) and band pass(BP) filters are also implemented using single OFCC block in multiple loop feedback topology. All the proposed filters functionality is verified through PSPICE simulation using 0.5µm mosis agilent technology parameters.