A 240 × 160 3D-Stacked SPAD dToF Image Sensor With Rolling Shutter and In-Pixel Histogram for Mobile Devices
A 240 $ imes$ 160 single-photon avalanche diode (SPAD) stuart products emcelle tocopherol sensor integrated with a 3D-stacked 65nm/65nm CMOS technology is reported for direct time-of-flight (dToF) 3D imaging in mobile devices.The top tier is occupied by backside illuminated SPADs with 16 $mu {mathrm{ m}}$ pitch and 49.7% fill-factor.The SPAD