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Frequency equation for the submicron CMOS ring oscillator using the first order characterization

Publication Type : Journal Article

Publisher : Journal of Semiconductors

Source : Journal of Semiconductors, Institute of Physics Publishing, Volume 39, Number 5 (2018)

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Campus : Bengaluru

School : School of Engineering

Department : Electronics and Communication

Year : 2018

Abstract : pBy utilizing the first order behavior of the device, an equation for the frequency of operation of the submicron CMOS ring oscillator is presented. A 5-stage ring oscillator is utilized as the initial design, with different Beta ratios, for the computation of the operating frequency. Later on, the circuit simulation is performed from 5-stage till 23-stage, with the range of oscillating frequency being 3.0817 and 0.6705 GHz respectively. It is noted that the output frequency is inversely proportional to the square of the device length, and when the value of Beta ratio is used as 2.3, a difference of 3.64% is observed on an average, in between the computed and the simulated values of frequency. As an outcome, the derived equation can be utilized, with the inclusion of an empirical constant in general, for arriving at the ring oscillator circuit's output frequency. © 2018 Chinese Institute of Electronics./p

Cite this Research Publication : Aravinda K and Dr. T. K. Ramesh, “Frequency equation for the submicron CMOS ring oscillator using the first order characterization”, Journal of Semiconductors, vol. 39, 2018.

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