Matthew L. Polizzotto, Charles F. Harvey, Guangchao Li, Borhan Badruzzman et al.
Lixia Zheng, Guangchao Zhang, Jin Wu, Huan Hu et al.
An innovative active-quenching circuit for single photon avalanche diode is presented. A differential amplification circuit based on offset control scheme is adopted to realize rapid avalanche signal discrimination. In order to save the die area, a voltage-controlled transistor acting as a sensing r...