BASIC64: A new mixed-signal front-end ASIC for SiPM detectors

Calò, P.A.P.; Ciciriello, F.; Corsi, F.; Marzocca, C.; Matarrese, G.; Bisogni, Maria Giuseppina

doi:10.1109/nssmic.2016.8069651

Cited by 2 publications

(4 citation statements)

References 18 publications

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“…Parameters like, time stamp, energy, etc are computed by the ASIC. Finally the extracted parameters are transmitted to the post processing modules [12][13][14][15][16]. Advantages of this approach are the simplified post processing unit with a simplified interface and a reduced data rate transfer between the ASIC and the post processing module.…”

Section: Discussionmentioning

confidence: 99%

“…Because of their potential characteristics, the Multi Pixel Photon Counters (MPPCs) are frequently employed in PET scanners [12][13][14]. These are also named as Silicon Photo-Multipliers (SiPMs), solidstate photo-detectors function in quenched Geiger mode [13,15,16]. These are descendants of photomultipliers [15].…”

Section: Introductionmentioning

confidence: 99%

“…It can render several advantages like a reduced patient dose, an increased tomographic resolution etc [20][21][22][23]. Thanks to the modern ASIC technologies, which allow following this approach while keeping the system compact and efficient [12][13][14][15][16][18][19][20][21]. The current ASIC design approaches are divided in two categories.…”

Section: Introductionmentioning

confidence: 99%

“…The current ASIC design approaches are divided in two categories. In first approach, a sophisticated and complex ASIC is implemented with a simpler post processing module [12][13][14][15][16]. Benefits of this methodology are the simplified interface and a reduced data rate transfer between the ASIC and the post processing module along with a simpler post processing.…”

Section: Introductionmentioning

confidence: 99%

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A custom 70-channel mixed signal ASIC for the brain-PET detectors signal readout and selection

Qaisar¹

2019

Biomed. Phys. Eng. Express

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This paper presents a 70-channel mixed signal Application Specific Integrated Circuit (ASIC) for Silicon Photo-Multipliers (SiPM) detectors, used in the axial architecture based Time of Flight (ToF) Brain-PET scanners, readout. The current pulses obtained at the output of SiPM arrays are transformed into voltages with the help of charge resistances and then passed to the low noise and high bandwidth preamplifier stages. The amplified pulses are simultaneously passed to the pulse detection modules and the low-pass Sallen-Key filtering stages. The cut-off frequency of the filtering stages is selected as 80 MHz. The denoised pulses are conveyed to the discrete times delay lines (DLs). DLs operate at a 200 MHz sampling frequency and are founded on the base of a novel parallel architecture in place of the classical bucket bridge realization. Each detection module sums up the conditioned pulses of the SiPM pair, mutually aligned 180 degrees apart, and compares its mangnitude with a Leading Edge Discriminator (LED). LEDs outputs are employed by the coincidence detection and address encoding module. DLs are parameterized in order to achieve an effective baseline of around 140 ns while properly coping with the processing delays of the pulse detection, the coincidence detection and the address encoding modules. In the case of a coincidence detection, the concerned delayed pulses are selected by piloting two multiplexers with encoded address and are passed to the post processing modules. The selection process avoids the number of false events processing. It improves the sensitivity, processing efficiency and power consumption of the system. The ASIC is implemented on the 0.35 μm BiCMOS technology. The proposed ASIC functionality is verified with post layout simulations. The typical power consumption is respectively 60.4 mW and 4.693 W for a single channel and for the whole ASIC. Results have confirmed the effectiveness of suggested solution for the SiPM detectors signals readout and selection for Brain-PET applications.

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