Abstract
A novel electronically adjustable square/triangular waveform generator has been introduced in this paper. The proposed circuit employs one active element, the multi-output current-controlled current conveyor transconductance amplifier, and one passive component grounded capacitor only. The resistorless realization of the presented generator provides a good advantage in terms of integrated circuit fabrication. In the offered circuit, the frequency and amplitude of the output square wave are electronically tunable by means of relevant bias currents. Additionally, the upper and lower threshold levels are electronically controllable by the respective bias current. On the contrary, electronically adjusting of the duty cycle of output waveform is possible via the external DC current. The generator circuit is simulated with TSMC 0.18[Formula: see text][Formula: see text]m technology parameters and SPICE. Moreover, the introduced circuit is implemented by using commercially available active devices and thus it is also verified experimentally.
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