New first order multifunction filter employing operational transresistance amplifier

This research paper introduces a new voltage mode first order multifunction filter using three operational transresistance amplifier (OTRA) and some passive components. A single topology is used for the implementation of first order low pass(LP), high pass(HP) and all pass(AP) filter functions. One can tap all the three filter functions simultaneously form the proposed topology. It is simulated using PSPICE with 0.5μm CMOS process parameters provided by MOSIS (AGILENT). The simulation results nicely match with the theoretical results.