VLQC circuit


Posted on Feb 5, 2014

VLQC is a quenching circuit designed in our laboratories to perfectly suit the constraints of an array, i. e. high compactness, cross-talk avoidance and low afterpulsing. In VLQC a single transistor performs the sensing, quenching and reset tasks drastically reducing the overall detector parasitic capacitance and thus system power consumption, pixel-to-pixel optical


VLQC circuit
Click here to download the full size of the above Circuit.

coupling and afterpulsing. The picture below shows a test integrated circuit comprising the VLQC. A part from the output buffer that is necessary to drive pads, VLQC area is comparable with a 20um SPAD area.




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