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Proximity sensor having array of geiger mode avalanche photodiodes for estimating distance of an object to the array based on at least one of a dark current and a rate of current spikes generated in dark conditions
Proximity sensor having array of geiger mode avalanche photodiodes for estimating distance of an object to the array based on at least one of a dark current and a rate of current spikes generated in dark conditions
A proximity sensor may include an array of Geiger mode avalanche photodiodes, each including an anode contact and a cathode contact. A common cathode contact may be coupled to the cathode contacts of the array to define a first connection lead at a back side of the array. A common anode collecting grid contact may be coupled to the anode contacts of the array to define a second connection lead of the array. Circuitry may be coupled with the first and second connection leads and configured to sense at least one of a dark current and a rate of current spikes generated in dark conditions, and generate an output signal representing an estimated distance of an object from the array upon the sensing.
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