Signal Driven Multiplexing of Silicon Photomultiplier Arrays

SensL C-, Jand R-Series SiPM sensors have a fast, capacitively coupled output that gives a high speed output signal, which is suitable for timing applications. Summing the fast output directly is not recommended as this would negatively affect the resulting signal. By introducing a diode pair (fast Schottky) as shown in Figure 1, the Fast signal from the active SiPM is transferred to the Common Readout node while the Fast outputs of the remaining pixels in the array are effectively isolated from the Common Readout node.