Single-CFOA-Single-External-Capacitor-Based Partially-Active-R SRCOs: The Fourth Missing Circuit

Abstract

A new single-resistance-controlled-oscillator (SRCO) is presented which employs a single current feedback-operational amplifier (CFOA) along with four resistors but needs only a single external capacitor due to the incorporation of the CFOA-pole in the design. It provides independent control of the condition of oscillation and the frequency of oscillation through two separate resistors. To the best knowledge of the authors, this single-CFOA-based partially active-[Formula: see text] SRCO has not been reported explicitly in the technical literature earlier and hence is the fourth missing circuit of this class of SRCOs. Experimental results confirming the validity of the new proposition have been included and the comparative features of all the four circuits have been highlighted.