| 摘要 |
PROBLEM TO BE SOLVED: To provide a quartz oscillator with a frequency correction function having a standard long radio wave reception function, that corrects deterioration in the selective characteristic of a quartz filter selecting a standard radio wave due to ambient temperature so as to improve the precision of an oscillated frequency. SOLUTION: The crystal oscillator is provided with the quartz filter 3 selecting a standard radio wave, a temperature compensation voltage generating circuit comprising a temperature sensor 8, an analog/digital converter 9, a ROM 10 and a digital/analog converter 11 or the like, a frequency correction circuit 5 that generates a frequency correction signal from the standard radio wave signal, and a quartz oscillator 6 that outputs an oscillation signal at a prescribed frequency according to the frequency correction signal. |
