Patent
System and method for reducing temperature-dependent and process-dependent frequency variation of a crystal oscillator circuit
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TLDR
In this paper, the authors proposed a method for determining an ambient temperature of an oscillator and estimating an approximate frequency of operation of the oscillator, and then applying a process-based compensation to a resonator based on the approximate frequency.Abstract:
In embodiments of the present disclosure, a method may include determining an ambient temperature of an oscillator. The method may also include estimating an approximate frequency of operation of the oscillator. The method may additional include determining a process-based compensation to be applied to a resonator of the oscillator based on the approximate frequency. The method may further include setting a capacitance of a variable capacitor coupled to the resonator in order to compensate for temperature-dependent and process-dependent frequency variation of the oscillator based on the ambient temperature and the process-based compensation.read more
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References
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