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首页> 外文会议>Advances in sensors and Interfaces, 2009. IWASI 2009 >A self-triggered CMOS front-end for Silicon Photo-Multiplier detectors
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A self-triggered CMOS front-end for Silicon Photo-Multiplier detectors

机译：用于硅光电倍增管检测器的自触发CMOS前端

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摘要

A complete analog front-end channel suitable for Silicon Photo-Multiplier (SiPM) detectors has been designed in a standard CMOS 0.35 mum technology. The current-mode approach exploited in the first stage of the proposed architecture allows to fulfill the severe constraints imposed by this kind of detectors in terms of dynamic range and speed of operation, without excessive power consumption. Timing accuracy of about 50 ps, obtained with the electronics coupled to a fast pulse generator in series to a charge injection capacitance, has been obtained by means of a fast current discriminator. The circuit is specially intended for medical imaging applications, for instance PET, but programmability of detector bias, gain and threshold current enhances the flexibility of the architecture, making it suitable for different kind of SiPM detectors and applications. An 8-channel ASIC, suitable for the read-out of SiPM arrays has been designed and manufactured following this approach. The characterization of the chip is currently in progress. Here we report the preliminary measurement results obtained by coupling a single channel to a single SiPM detector excited by a pulsed blue LED.
机译：适用于硅光电倍增管（SiPM）检测器的完整模拟前端通道已采用标准CMOS 0.35妈妈技术进行了设计。在所提出的架构的第一阶段中利用的电流模式方法允许在动态范围和操作速度方面满足由这种检测器施加的严格约束，而没有过多的功耗。通过快速电流鉴别器，将电子设备耦合到与电荷注入电容串联的快速脉冲发生器，可以获得约50 ps的定时精度。该电路专门用于医疗成像应用，例如PET，但是检测器偏置，增益和阈值电流的可编程性提高了体系结构的灵活性，使其适合于不同种类的SiPM检测器和应用。按照这种方法已经设计和制造了一种适合于SiPM阵列读取的8通道ASIC。芯片的表征目前正在进行中。在这里，我们报告通过将单个通道耦合到由脉冲蓝光LED激发的单个SiPM检测器获得的初步测量结果。

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