title: Avalanche current read-out circuit for low jitter parallel photon timing.
abstract: We propose a novel circuit for single photon avalanche diode (SPAD) current read-out, for photon timing applications. The circuit consists of a single transistor trans-impedance amplifier with a GHz bandwidth: the feedback loop fixes the SPAD anode voltage and allows us to obtain a high time resolution with a very high equivalent current threshold (almost 700 μA). The trans-impedance stage is followed by a low pass filter that reduces the crosstalk of other on-chip detectors and makes the designed structure suitable for multi-detector systems. The discrete components prototype presented in this letter achieves a state-of-art resolution of 34.4 ps FWHM, presents negligible crosstalk between the different pixels and opens the way for the development of an integrated structure with a large number of channels.
authors.affiliation: M. Crotti, I. Rech, A. Gulinatti and M. Ghioni (Politecnico di Milano, DEIB, Milan, Italy).
authors.forename: M
authors.initials: M
authors.lastname: Crotti
authors.affiliation: M. Crotti, I. Rech, A. Gulinatti and M. Ghioni (Politecnico di Milano, DEIB, Milan, Italy).
authors.forename: I
authors.initials: I
authors.lastname: Rech
authors.affiliation: M. Crotti, I. Rech, A. Gulinatti and M. Ghioni (Politecnico di Milano, DEIB, Milan, Italy).
authors.forename: A
authors.initials: A
authors.lastname: Gulinatti
authors.affiliation: M. Crotti, I. Rech, A. Gulinatti and M. Ghioni (Politecnico di Milano, DEIB, Milan, Italy).
authors.forename: M
authors.initials: M
authors.lastname: Ghioni