WORKSHOP PAPER
SPAD based Time of Flight Pixel Circuits for Large Scale Arrays
Kasper Buckbee1,2, Neale A. W. Dutton2, Robert K. Henderson1
1School of Engineering, Institute for Integrated Micro and Nano Systems, The University of Edinburgh,
2STMicroelectronics Imaging Division, Edinburgh, UK

Abstract

Large-scale 3D time of flight sensors face several challenges: high power consumption, large pixel pitch, mostly single-bin operation and/or a low count depth where multi-bin pixels are implemented. This paper presents a 2-bin and 4-bin SPAD pixel circuit with a 7 – 10 ENOB full well capacity and < 20 nW/MHz power consumption, at pixel pitches of 4.8 µm and 7.1 µm respectively.
Publisher: IISS (Int. Image Sensors Society)
Year: 2021
Workshop: IISW
URL: https://doi.org/10.60928/mn8c-q9cf
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Keywords

SPAD, Time of Flight, Pixel Circuit,

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