Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2010, Vol. 21 ›› Issue (2): 118-122 doi: 10.13538/j.1001-8042/nst.21.118-122


A versatile 16-channel front-end integrated circuit for semiconductor radiation detectors

ZHANG Yacong1,* CHEN Zhongjian1 LU Wengao1 AN Huiyao1 JIN Ye2 JI Lijiu1   

  1. 1 Key Laboratory of Microelectronic Devices and Circuits, Institute of Microelectronics, Peking University, 100871, China 2 Institute of Electronics, Peking University, 100871, China
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ZHANG Yacong, CHEN Zhongjian, LU Wengao, AN Huiyao, JIN Ye, JI Lijiu. A versatile 16-channel front-end integrated circuit for semiconductor radiation detectors.Nuclear Science and Techniques, 2010, 21(2): 118-122     doi: 10.13538/j.1001-8042/nst.21.118-122


A CMOS front-end integrated circuit consisting of 16 identical analog channels is proposed for semiconductor radiation detectors. Each of the 16 channels has a low noise charge sensitive amplifier, a pulse shaper, a peak detect and hold circuit and a discriminator, while analog voltage and channel address are routed off the chip. It can accommodate both electron and hole collection with selectable gain and peaking time. Sequential and sparse readout, combining with self-trigger and external trigger, makes four readout modes. The circuit is implemented in a 0.35 μm DP4M (double-poly-quad-metal) CMOS technology with an area of 2.5×1.54 mm2 and power dissipation of 60 mW. A single channel chip is tested with Verigy 93000. The gain is adjustable from 13 to 130 mV·fC–1 while the peaking time varies between 0.7 and 1.6 μs. The linearity is more than 99% and the equivalent noise charge is about 600e.

Key words: Radiation detectors, Front end electronics, Multi-channel, Application specific integrated circuit