Patent ID: 8586908
Filing Date: 2013-11-19
Classification: G01J,H01L

Abstract:
1. A light-detection circuit, comprising: an avalanche photodiode implemented in a deep submicron CMOS technology; a passive quench control circuit of the light-detection circuit to create an avalanche current that generates a high voltage at an output of a second inverter gate of the circuit; an active quench control circuit of the light-detection circuit to reduce a dead time of the circuit; a reset circuit of the light-detection circuit to create a low voltage at an output of the second inverter gate and to create an active reset of a PMOS transistor of the circuit; a column addressing circuit to accumulate a plurality of integrations in a plurality of digital counters without resetting the PMOS transistor; a parallel to serial shift register to process the accumulated plurality of integrations; and