Digital Silicon Photomultipliers With OR/XOR Pulse Combining Techniques

作者：Gnecchi Salvatore^*; Dutton Neale A W^*; Parmesan Luca^*; Rae Bruce R^*; Pellegrini Sara^*; McLeod Stuart J^*; Grant Lindsay A^*; Henderson Robert K^*

来源：IEEE Transactions on Electron Devices, 2016, 63(3): 1105-1110.

DOI：10.1109/TED.2016.2518301

• Digital silicon photomultiplier (dSiPM)
• OR tree
• pile-up
• positron emission tomography (PET)
• single-photon avalanche diodes (SPADs)
• XOR tree

A recently proposed XOR-based digital silicon photomultiplier (dSiPM) is compared against the OR-based counterpart. We show experimental data from a set of single-photon avalanche diode (SPAD) pixel arrays in 130-nm CMOS process with selectable OR tree and XOR tree for direct comparison. We demonstrate how XOR-based dSiPMs solve the limitation caused by monostable circuits and reach higher maximum count rates compared with optimized OR-based dSiPMs. The increased throughput of the SPAD array allows higher sampling rates for the digitization of the light signal enhancing dynamic range and linearity.

• 出版日期2016-3