Development of an Eight-Channel Time-Based Readout ASIC for PET Applications.
Development of an Eight-Channel Time-Based Readout ASIC for PET Applications.
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开发用于 PET 应用的八通道基于时间的读出 ASIC
DOI：
10.1109/tns.2011.2165557
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发表时间：
2011-12
影响因子：
1.8
通讯作者：
Shao Y
中科院分区：
文献类型：
--
作者：
Deng Z;Lan AK;Sun X;Bircher C;Liu Y;Shao Y
研制了一种用于正电子发射层析成像的8通道读出专用集成电路，用于读取固态光电倍增管的输出信号。该ASIC将信号电荷和发生时间都转换为数字定时脉冲，因此只需要时间到数字转换器来进行进一步的信号处理。这提供了简化电路设计、降低功耗以及适用于具有大量读出通道的应用的优点。该ASIC使用全电流模式前置放大器来实现高带宽(100 MHz)、高时间分辨率(优于~1 ns半高宽)和低功耗(几mW/ch)。电荷测量的线性动态范围是可调的，最高可扩展到103pC。该芯片采用0.35μm 2P4M工艺实现。开发了一块用于ASIC功能和性能评估的测试原型板。我们的初步研究表明，这些目标已经成功实现。
An eight-channel readout ASIC has been developed for reading output signals from solid-state photomultipliers for positron emission tomography applications. This ASIC converts both the signal charge and occurring time to digital timing pulses so that only a time-to-digital converter is required for further signal processing. This provides the advantages of simplified circuit design, reduced power consumption, and suitability for applications that have a large number of readout channels. The ASIC uses a fully current mode preamplifier to achieve high bandwidth ( >; 100 MHz), high time resolution (better than ~ 1 ns FWHM), and low power consumption (a few mW/ch). The linear dynamic range of charge measurement is adjustable and can be extended up to 103 pC. The chip has been fabricated with 0.35 μm 2P4M CMOS technology. A test prototype board has been developed and used for ASIC functionality and performance evaluation. Our preliminary studies show that the targets have been successfully achieved.