Frequency-detecting circuit, duty-cycle corrector, and electronic device
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United States of America
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Dec 31, 2024
Grant Date -
Nov 30, 2023
app pub date -
Dec 14, 2022
filing date -
Dec 14, 2022
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Abstract
A frequency-detecting circuit, a DCC, and an electronic device. The frequency-detecting circuit includes a control-signal generating circuit generating a first control signal and a second control signal delayed relative to the first control signal; a charging and discharging path, under control of the second control signal, during a period with a pulse width when the second control signal is at a high level, performing the discharging process, and performing the charging process during another period when the second control signal is at a low level; and a control-voltage generating circuit, sampling values of a voltage of an output terminal of the charging and discharging path before the discharging process during a period with a pulse width when the first control signal is at the high level, to output a corresponding first voltage signal.
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