Table of Contents
ISRN Electronics
Volume 2012, Article ID 382560, 5 pages
Research Article

Electronically Controllable Explicit Current Output Sinusoidal Oscillator Employing Single VDTA

Department of Electronics & Communication Engineering, Faculty of Engineering and Technology, Jamia Millia Islamia, New Delhi 110025, India

Received 27 July 2012; Accepted 16 August 2012

Academic Editors: S. Gift, M. Liao, and L. Martiradonna

Copyright © 2012 Dinesh Prasad and D. R. Bhaskar. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


A new current-mode sinusoidal oscillator employing a single voltage differencing transconductance amplifier (VDTA), two grounded capacitors, and one grounded resistor has been proposed. The proposed sinusoidal oscillator offers the following advantageous features: (i) use of grounded capacitors which are attractive from the view point of IC implementation as well as eliminating/accommodating parasitic capacitances, (ii) independent control of frequency of oscillation and condition of oscillation, (iii) ready availability of explicit current-mode output, (iv) low active and passive sensitivities, and (v) a very good frequency stability. The workability of the proposed configuration has been established by PSPICE simulations.