POWER MONITORING DEVICE AND RECEIVING APPARATUS
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United States of America Patent
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Issued Date -
Mar 2, 2017
app pub date -
Jun 5, 2014
filing date -
Jun 5, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
An APD that converts a received optical signal to a current signal, a current mirror circuit that duplicates the current signal and outputs a duplicate current signal as a mirror current, a resistor that converts the mirror current to a voltage, a sample and hold circuit that samples the converted voltage at a timing when a trigger voltage is input and holds a value of the sampled voltage, an inverter connected between the resistor and the sample and hold circuit, and a capacitor connected to the output side of the inverter are included, and the inverter allows the capacitor to be connected to the input side of the sample and hold circuit when a trigger voltage is input to the sample and hold circuit and allows the capacitor to be unconnected to the input side of the sample and hold circuit when the trigger voltage is not input to the sample and hold circuit.
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