Crystal oscillator and method for adjusting oscillation frequency
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United States of America Patent
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Dec 29, 2020
Grant Date -
Oct 3, 2019
app pub date -
May 10, 2019
filing date -
Mar 29, 2018
priority date (Note) -
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Abstract
A crystal oscillator and a method are provided for adjusting an oscillation frequency. The crystal oscillator includes: a first oscillator circuit, a frequency control circuit and a crystal; where the first oscillator circuit is configured to output a first drive signal having a first oscillation frequency to drive the crystal, and the frequency control circuit is configured to determine a frequency control amount according to a feature of an electrical signal flowing through the crystal under driving of the first drive signal, and adjust the first oscillation frequency according to the frequency control amount. When the technical solutions are applied to scenarios where the crystal oscillator is enabled to quickly en-oscillate, a natural en-oscillation cycle of the crystal oscillator may be shortened, and the en-oscillation speed is increased.
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