A readout chip for a 64 x 64 pixel matrix with 15-bit single Photon Counting
A readout chip for a 64 x 64 pixel matrix with 15-bit single Photon Counting
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DOI：
10.1109/23.682629
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发表时间：
1998-06-01
影响因子：
1.8
通讯作者：
Snoeys, W
中科院分区：
文献类型：
--
作者：
Campbell, M;Heijne, EHM;Snoeys, W
单光子计数像素探测器读出芯片(PCC)是从CERN RD19合作的粒子物理跟踪设备的先前工作中衍生出来的，该设备最近开发用于高能物理实验。读出芯片是相同的170µm×170µm单元的×矩阵。它将被凹凸不平地粘合到等分成1厘米(2)的半导体传感器矩阵上，例如硅或砷化镓。每个读出单元包括前置放大器、鉴别器和15位计数器。输入噪声为170 e-rms，在1400 e-(5.1keV in Si)的最低标称阈值下，单元呈现阈值分布，调整前的扩展为350 e-rms，每个单元具有5位寄存器，允许屏蔽、测试使能和3位单独阈值调整。调整后，阈值扩展减小到80e-rms。一旦读出芯片被凸点粘合到探测器上，就可以进行电测得的等效电荷的绝对校准。
A single Photon Counting pixel detector readout Chip (PCC) has been derived from previous work in the CERN RD19 collaboration for particle physics tracking devices, recently developed for high energy physics experiments. The readout chip is a 64 x 64 matrix of identical 170 mu m x 170 mu m cells. It is to be bump-bonded to an equally segmented 1 cm(2) matrix of semiconductor sensors, e.g. Si or GaAs. Each readout cell comprises a preamplifier, a discriminator and a 15-bit counter. The input noise is 170 e- rms, At the lowest nominal threshold of 1400 e- (5.1 keV in Si) the cells exhibit a threshold distribution with a spread before adjustment of 350 e- rms, Each cell has a 5-bit register which allows masking, test-enable and 3-bit individual threshold adjust. After adjustment the threshold spread is reduced to 80 e- rms. Absolute calibration of the electrically measured equivalent charge can be done once the readout chip is bump-bonded to a detector.