| 摘要 |
A photodetector includes a photoelectric conversion circuit that generates a first voltage by converting a first current generated in accordance with the illuminance of incident light into log-compressed voltage; a temperature compensation circuit that generates a second voltage by performing temperature compensation for the first voltage and generate a second current by converting the second voltage into current; and a digital signal generation circuit that generates a clock signal having an oscillation frequency depending on the second current, counts pulses of the clock signal for a certain period, and generates a digital signal using the count value for the certain period as data.
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