Third Order Low Frequency Sinusoidal Oscillators Employing CFOAs and Grounded Capacitors

In this communication, two new third order low frequency sinusoidal oscillators (TOLFSO) employing current feedback operational amplifiers (CFOAs) have been presented. The circuits employ four CFOAs, four/five resistors and three grounded capacitors. The proposed circuits offer fully decoupled/ separate control of oscillation condition (OC) and oscillation frequency (OF). To corroborate the theoretical propositions, experimental results have been included using off-the-shelf available CFOA IC AD844.