Medipix3: A 64 k pixel detector readout chip working in single photon counting mode with improved spectrometric performance
Medipix3: A 64 k pixel detector readout chip working in single photon counting mode with improved spectrometric performance
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DOI：
10.1016/j.nima.2010.06.108
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发表时间：
2011-05-01
影响因子：
1.4
通讯作者：
Wong, W.
中科院分区：
文献类型：
--
作者：
Ballabriga, R.;Campbell, M.;Wong, W.
Medipix3是一款256 x 256通道混合像素探测器读出芯片，工作在单光子计数模式下，具有新的像素间架构，旨在通过减轻通道之间电荷共享的影响来提高像素化探测器的能量分辨率。电荷在芯片上的所有2 × 2像素簇中求和，并且给定的命中在逐事件的基础上局部分配给具有最大总电荷的像素求和电路。每个像素还包含两个12位二进制计数器，具有可编程深度和溢出控制。芯片可配置为使得每个检测器像素的尺寸与一个读出像素的尺寸匹配，或者检测器像素的面积是读出像素的四倍。在后一种情况下，在较大的像素之间仍然可以进行逐事件求和。每个像素具有大约1600个晶体管，并且模拟静态功耗在电荷求和模式下低于15 μ W，在单像素模式下低于9 μ W。该芯片已建成在一个8金属0.13 μ m的CMOS技术。本文介绍了芯片从像素到外围的第一个电学结果。(C)2010爱思唯尔有限公司版权所有。
Medipix3 is a 256 x 256 channel hybrid pixel detector readout chip working in a single photon counting mode with a new inter-pixel architecture, which aims to improve the energy resolution in pixelated detectors by mitigating the effects of charge sharing between channels. Charges are summed in all 2 x 2 pixel clusters on the chip and a given hit is allocated locally to the pixel summing circuit with the biggest total charge on an event-by-event basis. Each pixel contains also two 12-bit binary counters with programmable depth and overflow control. The chip is configurable such that either the dimensions of each detector pixel match those of one readout pixel or detector pixels are four times greater in area than the readout pixels. In the latter case, event-by-event summing is still possible between the larger pixels. Each pixel has around 1600 transistors and the analog static power consumption is below 15 mu W in the charge summing mode and 9 mu W in the single pixel mode. The chip has been built in an 8-metal 0.13 mu m CMOS technology. This paper describes the chip from the pixel to the periphery and first electrical results are summarized. (C) 2010 Elsevier B.V. All rights reserved.