Method of manufacturing crystal oscillator and the crystal oscillator manufactured by the method
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United States of America Patent
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Issued Date -
Apr 5, 2007
app pub date -
Oct 3, 2006
filing date -
Oct 3, 2005
priority date (Note) -
Abandoned
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Abstract
The method of manufacturing a crystal oscillator that is compensated for temperature with low-cost, and a crystal oscillator that is compensated for temperature by the method is disclosed. A plurality of crystal oscillators are manufactured by preparing a compensation circuit that generates a common compensation voltage in accordance with a predetermined compensation curve expressed by a quintic polynomial of an ambient temperature; and manufacturing each of the plurality of crystal oscillators by integrating the compensation circuit with a voltage controlled oscillation circuit including a crystal resonator, the common compensation voltage generated by the compensation circuit being supplied to the voltage controlled oscillation circuit so that the temperature characteristic of the crystal resonator is compensated.
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