CPC H01L 31/02027 (2013.01) [G01J 1/44 (2013.01); H01L 27/14643 (2013.01); H01L 31/107 (2013.01); H04N 25/773 (2023.01); G01J 2001/442 (2013.01)] | 14 Claims |
1. A photoelectric conversion apparatus comprising:
an avalanche diode;
a detection circuit configured to output a signal based on an avalanche current generated by avalanche multiplication in the avalanche diode;
a counter configured to count the number of generation times of the avalanche current detected by the detection circuit;
a switch disposed between an output node of the avalanche diode and the counter;
a reset circuit configured to reset a node between the switch and the detection circuit; and
a second reset circuit configured to reset the output node of the avalanche diode,
wherein a transistor constituting the switch and a transistor constituting the reset circuit have opposite conductivity types,
wherein a gate of the reset circuit is not connected to an output node of the detection circuit,
wherein the reset circuit resets the node during a period in which the switch is in an off state, and
wherein a response time of the second reset circuit is longer than Td, where Td represents an interval between a falling edge and a rising edge of a potential input to the detection circuit when a threshold voltage of the detection circuit is passed through.
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