Marvell International Limited

Alberto Demarziani

Francesco Rezzi

Gabriele Gandolfi

Vittorio Colonna

Alessandro Savo

Stefano Marchese

Michele Chiabrera

Giacomo Bernardi

Marco Bongiorni

Alessio Pelle

An apparatus includes a temperature sensor, a digitally-controlled capacitor and a processor. The temperature sensor is coupled to a crystal oscillator and configured to generate an input signal depending on a temperature of the crystal oscillator. The digitally-controlled capacitor is connected to the crystal oscillator and configured to receive a control signal and, based on the control signal, to control a frequency of an output signal generated by the crystal oscillator. The processor is configured to receive the input signal from the temperature sensor, to convert the input signal into the control signal based on parameters that characterize the crystal oscillator and the digitally-controlled capacitor, and to apply the control signal to the digitally-controlled capacitor.

Digitally-based temperature compensation for a crystal oscillator

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Vigevano, Italy

Alberto Demarziani