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2012•Applied Mechanics and MaterialsRequires access

A New Current-Mode Multiphase Sinusoidal Oscillator Using Adjoint Op-Amp

Yon Gan Li, Zhan Ting Fan, Xuan Ni Zhang

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Abstract

In order to get current-mode multiphase sinusoidal oscillator with high frequency, high accuracy, high stability and easy to be integrated, a multiphase sinusoidal oscillator circuit is presented. The oscillator can produce N output-currents (N being even or odd) with equal-amplitude and equal- phase spaced. The circuit uses adjoint Op-Amp, grounded capacitors and enjoys low passive sensitivities. The oscillation condition and frequency for the oscillator can be tuned independently. The simulated results are illustrated.

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What this paper is about

In order to get current-mode multiphase sinusoidal oscillator with high frequency, high accuracy, high stability and easy to be integrated, a multiphase sinusoidal oscillator circuit is presented. The oscillator can produce N output-currents (N being even or odd) with equal-amplitude and equal- phase spaced. The circuit uses adjoint Op-Amp, grounded capacitors and enjoys low passive sensitivities. The oscillation condition and frequency for the oscillator can be tuned independently. The simulated results are illustrated.

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Available abstract

In order to get current-mode multiphase sinusoidal oscillator with high frequency, high accuracy, high stability and easy to be integrated, a multiphase sinusoidal oscillator circuit is presented. The oscillator can produce N output-currents (N being even or odd) with equal-amplitude and equal- phase spaced. The circuit uses adjoint Op-Amp, grounded capacitors and enjoys low passive sensitivities. The oscillation condition and frequency for the oscillator can be tuned independently. The simulated results are illustrated.

Key concepts: Vackář oscillator, Oscillation (cell signaling), Delay line oscillator, RC oscillator, Variable-frequency oscillator, Colpitts oscillator, Amplitude, Voltage-controlled oscillator

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