Abstract
A multipurpose monolithic array of 2×2 multi-channel digital silicon photomultipliers (MD-SiPMs) fabricated in 40nm CMOS technology is presented. Each MD-SiPM comprises 64×64 smart pixels connected to 128 low-power 45ps sliding-scale time-to-digital converters (TDCs). The MD-SiPMs are designed to indirectly capture gamma events in positron emission tomography (PET). The sensor can operate in frame-based and event-driven mode; the latter best suited to capture gamma events. The digital read-out is fully embedded in the sensor and it is reconfigurable by way of serial communication. Data packets are sent following a simple protocol compatible with an external FIFO, therefore eliminating the need of an FPGA. A dedicated input can be used to operate synchronously with an event generator, such as a pulsed laser, useful in other applications, like LiDAR. The system is inherently compatible with 3D-stacking technology; thus serving as a front end for different SPAD technologies, suitable for a variety of applications.
Original language | English |
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Title of host publication | 2018 Symposium on VLSI Circuits Digest of Technical Papers |
Place of Publication | Piscataway, NJ |
Publisher | IEEE |
Pages | 73-74 |
Number of pages | 2 |
Volume | 2018-June |
ISBN (Electronic) | 978-1-5386-4214-6 |
DOIs | |
Publication status | Published - 2018 |
Event | 2018 Symposia on VLSI Technology and Circuits: 2018 VLSI Technology Symposium - 2018 VLSI Circuits - Hilton Hawaiian Village, Honolulu, United States Duration: 18 Jun 2018 → 22 Jun 2018 |
Conference
Conference | 2018 Symposia on VLSI Technology and Circuits |
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Country/Territory | United States |
City | Honolulu |
Period | 18/06/18 → 22/06/18 |
Keywords
- Voltage-controlled oscillators
- Three-dimensional displays
- Vents
- Registers
- Energy resolution
- Positron emission tomography
- Field programmable gate arrays