TITLE:
Fully Uncoupled Electronically Controllable Sinusoidal Oscillator Employing VD-DIBAs
AUTHORS:
Data Ram Bhaskar, Dinesh Prasad, Kanhaiya Lal Pushkar
KEYWORDS:
Sinusoidal Oscillator; Voltage-Mode; VD-DIBA
JOURNAL NAME:
Circuits and Systems,
Vol.4 No.3,
June
26,
2013
ABSTRACT: Recently, voltage differencing-differential input buffered amplifiers (VD-DIBA)-based electronically controllable sinusoidal oscillator has been presented that it does not have the capability of complete independence of frequency of oscillation (FO) and condition of oscillation (CO) as well as electronic control of both CO and FO. In this article, a new fully-uncoupled electronically controllable sinusoidal oscillator using two VD-DIBAs, two grounded capacitors and two resistors has been proposed which offers important advantages such as 1) totally uncoupled and electronically controlled condition of oscillation (CO) and frequency of oscillation (FO); 2) low active and passive sensitivities; and 3) a very good frequency stability factor. The effects of non-idealities of the VD-DIBAs on the proposed oscillator are also investigated. The validity of the proposed formulation has been confirmed by SPICE simulation with TSMC 0.18 μm process parameters.