WORKSHOP PAPER
A 92k SPAD Time-Resolved Sensor in 0.13µm CIS Technology for PET/MRI Applications
Richard J. Walker1, Leo H. C. Braga2, Ahmet T. Erdogan1, Leonardo Gasparini2, Lindsay A. Grant3, Robert K. Henderson1, Nicola Massari2, Matteo Perenzoni2, David Stoppa2
1CMOS Sensors and Systems (CSS) Group, School of Engineering, The University of Edinburgh, Edinburgh, UK
2Smart Optical Sensors and Interfaces (SOI) Group, Fondazione Bruno Kessler (FBK), Trento, Italy
3Imaging Division, STMicroelectronics, Edinburgh, UK

Abstract

This paper presents a 92k SPAD, 16×8 pixel sensor for PET imaging, implemented in 0.13µm low voltage CIS technology. Within each pixel, 720 SPADs are organized into high fill factor mini-SiPMs placed around a central logic block. The sensor demonstrates a new architecture providing a 100Msamples/s energy histogramming capability, as well as an on-chip discriminator for the recognition of gamma events and integration control for the automatic acquisition of event data. Preliminary gamma measurements demonstrate an energy resolution of 13.1% at 20ºC, improving to 11.3% at -20ºC.
Publisher: IISS (Int. Image Sensors Society)
Year: 2013
Workshop: IISW
URL: https://doi.org/10.60928/lsg3-r2ts
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Keywords

SPAD, PET imaging, CIS technology,

References

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