Circuit Device And Oscillator
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United States of America Patent
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Issued Date -
Sep 19, 2024
app pub date -
Mar 12, 2024
filing date -
Mar 13, 2023
priority date (Note) -
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Abstract
Provided is a circuit device including: an oscillation circuit configured to generate an oscillation signal; a waveform shaping circuit configured to shape the oscillation signal into a clock signal having a rectangular wave; a low-pass filter configured to smooth the clock signal and generate a detection voltage corresponding to a duty of the clock signal; and a differential amplifier configured to output a bias voltage based on a difference between the detection voltage and a reference voltage to an input node of the waveform shaping circuit, in which a unity gain frequency of the differential amplifier is lower than a cutoff frequency of the low-pass filter.
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