Current-mode quadrature sinusoidal oscillator using uperational transconductance amplifier (OTAs)

Abstract

This paper presents a quadrature sinusoidal oscillator, providing sinusoidal signal, which differs in phase. The features of the proposed circuit can be electronically controlled. The proposed circuit consists of 4 operational transconductance amplifiers(OTAs) and 2 grounded capacitors, which is able to control the oscillation frequency(OF) and condition of oscillation(CO). To confirm the performance and theory of proposed circuit is verified by PSPICE simulations, and the experimental results can be achieved by using the commercial parts(LM13700s). The power consumption is about 33.3mW at supply voltages