Optical receiver device, pulse width modulation controller circuitry, and sensitivity control method
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United States of America Patent
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Jul 25, 2023
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N/A
app pub date -
Mar 16, 2021
filing date -
Jun 15, 2020
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Abstract
An optical receiver device includes a boost converter circuit, an optical receiver circuit, and a pulse width modulation controller circuitry. The boost converter circuit is configured to convert a supply voltage according to a pulse width modulation signal, in order to generate an output voltage. The optical receiver circuit is configured to set a gain according to the output voltage, in order to convert an optical signal to a data signal according to the gain. The pulse width modulation controller circuitry is configured to perform a digital to analog conversion according to a control code to gradually adjust a current associated with the output voltage, and to compare the output voltage with a reference voltage to generate the pulse width modulation signal.
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