A 128×120 5-Wire 1.96mm2 40nm/90nm 3D Stacked SPAD Time Resolved Image Sensor SoC for Microendoscopy

Tarek Al Abbas,Oscar Almer,Sam W. Hutchings,Ahmet T. Erdogan,Istvan Gyongy,Neale A. W. Dutton,Robert K. Henderson

Symposium on VLSI Circuits（2019）

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摘要

An ultra-compact 1.4mm×1.4mm, 128×120 SPAD image sensor with a 5-wire interface is designed for time-resolved fluorescence microendoscopy. Dynamic range (DR) is extended by noiseless frame summation in SRAM attaining 126dB time resolved imaging at 15fps with 390ps gating resolution. The sensor SoC is implemented in STMicroelectronics 40nm/90nm 3D-stacked BSI CMOS process with 8μm pixels and 45% fill factor.

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关键词

SPAD image sensor,3D Stacked SPAD time resolved image sensor,3D-stacked BSI CMOS process,time-resolved fluorescence microendoscopy

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