CIRCUIT DEVICE, OSCILLATOR, ELECTRONIC APPARATUS, AND VEHICLE
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United States of America Patent
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Issued Date -
Sep 24, 2020
app pub date -
Mar 19, 2020
filing date -
Mar 20, 2019
priority date (Note) -
Granted
status (Latency Note)
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Abstract
Provided is a circuit device including: an oscillation circuit oscillating a vibrator, in which the oscillation circuit includes a variable capacitance circuit having a first variable capacitance element and a second variable capacitance element constituted by a first transistor and a second transistor, and a reference voltage supply circuit. The first reference voltage is supplied to a first gate of the first transistor and a capacitance control voltage is supplied to a first impurity region of the first transistor, the second reference voltage is supplied to a second gate of the second transistor and the capacitance control voltage is supplied to a second impurity region of the second transistor, and the capacitance control voltage is supplied to a first common impurity region of the first transistor and the second transistor.
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