Experimental test and characterization of BASIC64, a new mixed-signal front-end ASIC for SiPM detectors

Abstract BASIC64 is a new multichannel front-end ASIC for Silicon photomultiplier detectors used in PET systems. The preamplifier input resistance is ∼ 50 Ω , low enough not to further affect the slope of incoming current pulses, already plagued by the presence of stray series inductance. For each channel, the signals generated by the detector follow two parallel processing paths, respectively for timing and energy measurements. The results of experimental test and characterization for timing accuracy and gain linearity are presented and confirm that BASIC64 is suitable for PET applications.