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在盖革模式下,为了保证器件的安全工作并对下一个光子信号响应,设计出一种适用于单光子雪崩二极管(single-photon avalanche detectors:SPAD)的单片集成抑制电路,结合了无源、有源抑制和门控功能,能在雪崩到来后迅速抑制电流,抑制时间为25ns,最小死时间为60ns,通过延时电路控制可以引入不同的死时间。该电路基本满足单光子探测抑制电路的要求,为单光子探测外围电路的设计提供了一种可选的方案。
In Geiger mode, a monolithic integrated suppression circuit suitable for single-photon avalanche detectors (SPADs) is designed to ensure the safe operation of the device and respond to the next photonic signal. , Active suppression and gating functions, the current can be rapidly suppressed after the onset of the avalanche, the suppression time of 25ns, the minimum dead time of 60ns, through the delay circuit control can introduce different dead time. The circuit basically meets the requirements of the single-photon detection suppression circuit and provides an alternative solution for the design of the single-photon detection peripheral circuit.