On the calibration of a SPAD-based 3D imager with in-pixel TDC using a time-gated technique

@article{Vornicu2015OnTC,
  title={On the calibration of a SPAD-based 3D imager with in-pixel TDC using a time-gated technique},
  author={Ion Vornicu and Ricardo Carmona-Gal{\'a}n and {\'A}ngel Rodr{\'i}guez-V{\'a}zquez},
  journal={2015 IEEE International Symposium on Circuits and Systems (ISCAS)},
  year={2015},
  pages={1102-1105}
}
The optical characterization of a CMOS 64×64 single-photon avalanche-diode (SPAD) array with in-pixel 11b time-to-digital converter (TDC) is presented. The overall full-width half-maximum (FWHM) of the detector ensemble SPAD plus TDC is 690ps. The sensor has been fabricated in a 0.18μm standard CMOS technology which features an average dark-count rate (DCR) of 42kHz at 1V excess voltage (Ve) and room temperature. The detector successfully uses its time-gating capability to mitigate this large… CONTINUE READING

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