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New Voltage Mode Sinusoidal Oscillator Using Voltage Differencing Transconductance Amplifiers (VDTAs)
Department of Electronics & Comm. Engineering, Jamia Millia Islamia, New Delhi, India
Department of Electronics & Comm. Engineering, Jamia Millia Islamia, New Delhi, India
- 1 Department of Electronics & Comm. Engineering, Jamia Millia Islamia, New Delhi, India
- 2 Department of Electronics & Comm. Engineering, Jamia Millia Islamia, New Delhi, India
Circuits and Systems·Volume 06 (2015)·Pages 173–178·Published 19 August 2015·DOI10.4236/cs.2015.68018
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Abstract
The purpose of this paper is to introduce a new electronically controlled voltage mode sinusoidal oscillator (VMSO) using Voltage Differencing Transconductance Amplifiers (VDTA). The proposed circuit provides electronic control of ω 0 and independent condition of oscillation (CO). It is found that the oscillator works very satisfactorily and pure sinusoidal waveforms are available at the outputs. The PSPICE simulation confirms the theoretical results. The proposed oscillator circuit employs only two VDTAs, along with two grounded capacitor and single grounded resistor. The circuit exhibits low active and passive sensitivities for ω 0 . Simulation results are obtained by using PSPICE software with TSMC CMOS 0.18 um process parameters.
KeywordsVoltage Differencing Transconductance Amplifier (VDTA)Voltage-Mode CircuitOscillator
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