Monolithic Active Pixel Matrix with Binary Counters (MAMBO) ASIC

F. Khalid, G. Deptuch, A. Shenai, R. Yarema
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引用次数: 9

Abstract

Monolithic Active Matrix with Binary Counters (MAMBO) is a counting ASIC designed for detecting and measuring low energy X-rays from 6–12keV. Each pixel contains analogue functionality implemented with a charge preamplifier, CR-RC2 shaper and a baseline restorer. It also contains a window comparator which can be trimmed by 4 bit DACs to remove systematic offsets. The hits are registered by a 12 bit ripple counter which is reconfigured as a shift register to serially output the data from the entire ASIC. Each pixel can be tested individually. Two diverse approaches have been used to prevent coupling between the detector and electronics in MAMBO III and MAMBO IV. MAMBO III is a 3D ASIC, the bottom ASIC consists of diodes which are connected to the top ASIC using μ-bump bonds. The detector is decoupled from the electronics by physically separating them on two tiers and using several metal layers as a shield. MAMBO IV is a monolithic structure which uses a nested well approach to isolate the detector from the electronics. The ASICs are being fabricated using the SOI 0.2μm OKI process, MAMBO III is 3D bonded at T-Micro and MAMBO IV nested well structure was developed in collaboration between OKI and Fermilab.
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单片有源像素矩阵与二进制计数器(MAMBO) ASIC
带二进制计数器的单片有源矩阵(MAMBO)是一种计数专用集成电路,用于检测和测量6-12keV的低能x射线。每个像素包含一个电荷前置放大器、CR-RC2整形器和基线恢复器实现的模拟功能。它还包含一个窗口比较器,可以通过4位dac修剪以消除系统偏移。命中由12位纹波计数器注册,该计数器被重新配置为移位寄存器,以串行输出来自整个ASIC的数据。每个像素都可以单独测试。在MAMBO III和MAMBO IV中,采用了两种不同的方法来防止探测器和电子器件之间的耦合。MAMBO III是一个3D ASIC,底部ASIC由二极管组成,这些二极管通过μ-bump键连接到顶部ASIC。探测器通过在两层上物理分离电子器件,并使用几层金属层作为屏蔽,从而与电子器件分离。MAMBO IV是一个单片结构,使用嵌套井方法将探测器与电子设备隔离开来。asic采用SOI 0.2μm OKI工艺制造,MAMBO III是在T-Micro进行3D键合,MAMBO IV是由OKI和Fermilab合作开发的嵌套井结构。
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