Abstract
This paper presents two novel voltage mode quadrature sinewave oscillator configurations employing Current Differencing Buffered Amplifier (CDBA) as active elements and a few passive components. Tuning of frequency and condition of oscillation can be performed independently. The proposed CDBA-based quadrature sinewave oscillator circuit offers two voltage outputs with a 90° phase difference from high output impedance terminals and the performance of the proposed circuit is also valued by well-known Monte-Carlo simulations. The sensitivity analysis also carried out. The simulated and hardware verification is performed using PSPICE 0.5 μm CMOS process parameters and Current Feedback Operational Amplifier (CFOA) based IC AD844AN, respectively, to produce periodical sinewave oscillations.
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