A Self-Sufficient Digitally Controlled Ring Oscillator Compensated for Supply Voltage Variation

Abstract : A self-sufficient Giga-Hertz digitally controlled ring oscillator for clock distribution network is presented in this paper. It features a high supply insensitivity in order to mitigate the additional jitter due to supply noise. This is achieved by inducing a mutual compensation between the oscillation frequency parameters that are affected by the supply voltage variations. The proposed method can be easily implemented and takes advantage of the deep sub-micrometer effects peculiar to topical CMOS technologies. We demonstrate by simulations that this approach remains efficient over process variations despite the reliability issue of short channel MOS transistors.
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Mehdi Terosiet, Sylvain Feruglio, Farouk Vallette, Patrick Garda, Olivier Romain, et al.. A Self-Sufficient Digitally Controlled Ring Oscillator Compensated for Supply Voltage Variation. The IEEE International Conference on Electronics, Circuits, and Systems (ICECS), Dec 2011, Beirut, Lebanon. pp.484-487, ⟨10.1109/ICECS.2011.6122318⟩. ⟨hal-01282527⟩

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