OSCILLATOR, ELECTRONIC EQUIPMENT, AND MOBILE OBJECT

摘要

PROBLEM TO BE SOLVED: To provide an oscillator or the like, capable of achieving high frequency stability.SOLUTION: An oscillator 1 includes: an oscillation element 20; an oscillation circuit 30; a heating element 40; a temperature control circuit 60; and a temperature correction signal generation circuit 10 for generating a temperature correction signal for correcting frequency temperature characteristics. The temperature correction signal generation circuit 10 includes: a temperature sensor 13; a primary correction signal generation circuit 11 for generating a primary correction signal; and a high order correction signal generation circuit 12 for generating a high order correction signal. The high order correction signal generation circuit 12 includes: a high temperature side secondary correction signal generation circuit 12a for generating a high temperature side secondary correction signal for performing secondary correction at a high temperature side higher than the temperature of the linear area of the frequency temperature characteristics; a high temperature side polarity switching circuit 120 for switching the polarity of the high temperature side secondary correction signal; a low temperature side secondary correction signal generation circuit 12b for generating a low temperature side secondary correction signal for performing secondary correction at a low temperature side lower than the temperature of the linear area; and a low temperature side polarity switching circuit 129 for switching the polarity of the low temperature side secondary correction signal.SELECTED DRAWING: Figure 5