Oscillator circuit, vibratory device, electronic apparatus, moving object, method of adjusting vibratory device, and sensitivity adjustment circuit

A sensitivity adjustment circuit comprising:

• a variable capacitance element, a capacitance value of which varies based on a first voltage applied to one end of the variable capacitance element, and a frequency control signal applied to another end of the variable capacitance element;
• and
• a load capacitance element,
• wherein a frequency control voltage sensitivity of a vibratory device varying in frequency is adjusted by varying the capacitance value of the variable capacitance element, and
• a capacitance value of a load capacitance circuit and the first voltage are controlled based on configuration information.

A method of adjusting a vibratory device comprising:

• providing the vibratory device including a resonator element, and an oscillator circuit having a load capacitance circuit, and a variable capacitance element, a capacitance value of which varies based on a first voltage applied to one end of the variable capacitance element, and a frequency control signal applied to another end of the variable capacitance element, and oscillating the resonator element at a frequency based on the frequency control signal;
• measuring a frequency of the vibratory device corresponding to each of at least three signal values of the frequency control signal;
• calculating frequency control voltage sensitivity of the vibratory device for each of the at least three signal values based on a measurement result of the measuring of a frequency;
• and
• adjusting at least one of a capacitance value of the load capacitance circuit and the first voltage based on a calculation result obtained in the calculating of frequency control voltage sensitivity so that frequency control voltage sensitivity of the vibratory device is included in a allowable range.