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Low power charge division circuits for wireless applications based on silicon photomultipliers (403 visite) (PDF 97 visite)
Ieee Sensors Journal (ISSN: 1530-437x), 2016; 16(23): 8214-8219.
Tipo di articolo: Original Journal Article
Impact factor: 0
Impact factor a 5 anni: 0
Parole chiave: Charge Division Circuits, Resistor Network, Scintillator Detectors, Silicon Photomultipliers., Elemental Semiconductors, Readout Electronics, Scintillation Counters, Diode Coupled Symmetric Charge Division, Image Reconstruction, Low-Power Charge Division Circuits, Printed Circuit Board, Readout System, Silicon Photomultiplier Arrays, Wireless Applications, Wireless Detectors, Integrated Circuit Modeling, Schottky Diodes, Wireless Communication
In this paper, we present a dedicated charge division circuit (CDC) as readout system for wireless detectors based on silicon photomultiplier (SiPM) arrays coupled to scintillators. In the proposed readout circuit, the SiPM output current is split into two symmetric signals by a pair of diodes, so it was called diode coupled symmetric charge division (DCSCD). The circuit was investigated using LTSPICE, fabricated as a printed circuit board and characterized. Its performances were compared with that of the traditional discrete positioning circuit (DPC) scheme. Testing the two CDC networks on a 16 × 28 array of SiPMs, we found that image reconstruction is significantly compromised when the DPC configuration is connected to few SiPMs, while the diode-based CDC configuration presents a very high-quality image histogram independently on the number of the connected photosensors. The proposed electronics features very low-power consumption when compared with commercial solutions and it is, therefore, suitable for battery-operated device, which requires a power-efficient design. Indeed, the DCSCD electronics requires less than 10 mW of static power to read out the 16 × 28 array of SiPMs, demonstrating the efficacy of the proposed diode-based CDC as passive readout circuitry and opening the route for the development of wireless gamma camera systems.
*** IBB - CNR ***
Biostructure and Bioimaging Institute, National Council for Research, Montelibretti (Rome), Italy.
Department of Information Engineering, Electronics and Telecommunications, University of Rome “La Sapienza”, Rome, Italy
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