This article describes three current-mode sinusoidal oscillator circuits with amplitude controllability. Each circuit consists of 2 CCCCTAs together with 2 grounded capacitors. The condition of oscillation and the frequency of oscillation can be electronically controlled by means of adjusting DC bias current of CCCCTAs. Furthermore, the amplitude of sinusoidal output signal can also be electronically adjusted which easily and conveniently used in communication system or for the demonstration purpose in laboratory. The output terminals of signals have high impedances that can be directly connected or coupled to next stages or loads. The PSPICE simulation results confirm that the proposed circuits have provided a good performance in accordance with the theoretical analysis.

current mode, CCCCTA, grounded capacitor.