| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a piezoelectric oscillator enabling to alternatively reduce power consumption or improve frequency accuracy on the basis of a control signal transmitted from the outside, a GSP receptor capable of achieving low power consumption with the piezoelectric oscillator, and an electronic apparatus. <P>SOLUTION: A temperature compensation circuit 10 generates a temperature compensation voltage for compensating frequency temperature characteristics of a piezoelectric vibrator 40 on the basis of obtained temperature information and temperature compensation data stored to a PROM 70 (storage unit). A voltage controlled oscillation circuit 30 oscillates the piezoelectric vibrator 40 and controls oscillation frequency of the piezoelectric vibrator 40 on the basis of a temperature compensation voltage. A switch circuit 60 (power supply control unit) controls so as to supply a power source voltage to the temperature compensation circuit 10 or so as not to supply the power source voltage to at least a part of the temperature compensation circuit 10 on the basis of a control signal transmitted from the outside. The temperature compensation voltage is supplied as the oscillation control voltage to the voltage controlled oscillation circuit 30 in synchronization with a period during which the power source voltage is supplied to the temperature compensation circuit 10. <P>COPYRIGHT: (C)2012,JPO&INPIT |
