Single photon avalanche diode quenching and resetting circuit with quick response

The invention provides a single photon avalanche diode quenching and resetting circuit with a quick response function. The single photon avalanche diode quenching and resetting circuit comprises an SPAD, a load resistor, an NMOS tube MN2, an avalanche detection inverter, a first PMOS tube MP1, a second PMOS tube MP2, a third PMOS tube MP3, a fourth PMOS tube MP4, a fifth PMOS tube MP5, a quenching signal level shifter, a resetting signal level shifter, a delay module, a monostable circuit and a low-voltage branch closing module. The invention provides a single photon avalanche diode quenching and resetting circuit with a quick response function. The problem that an existing quick response active quenching and resetting circuit cannot meet the requirement of high extra bias voltage needed by a high-sensitivity SPAD and cannot maintain the quick response characteristic at the same time is solved. 本发明提供一种具备快速响应的单光子雪崩二极管淬灭与复位电路，包括SPAD、负载电阻、NMOS管MN2、雪崩检测反相器、第一PMOS管MP1、第二PMOS管MP2、第三PMOS管MP3、第四PMOS管MP4、第五PMOS管MP5、淬灭