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US 2013/0257550 A1Published application
Circuit device, oscillation device, and electronic apparatus
AssigneeSeiko Epson Corporation
InventorsMasayuki ISHIKAWA, Takehiro YAMAMOTO
Life of this patent
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Abstract
A circuit device includes a current supply circuit adapted to supply an oscillation current, an oscillation circuit having an oscillation transistor for a resonator, and adapted to drive the resonator using the oscillation transistor based on an oscillation current from the current supply circuit, and a control section adapted to control the current supply circuit. If the oscillation circuit is set to an overdrive mode, the oscillation circuit drives the resonator with a higher drive power than the drive power in a normal mode.
Claims12
A circuit device comprising:
- a current supply circuit adapted to supply an oscillation current;
- an oscillation circuit having an oscillation transistor for an resonator, and adapted to drive the resonator with the oscillation transistor based on the oscillation current from the current supply circuit;
- and
- a control section adapted to control the current supply circuit,
- wherein if the oscillation circuit is set to an overdrive mode, the oscillation circuit drives the resonator with higher drive power than drive power in a normal node.
2 more elements
Dependencies are inferred from the claim text.