用于Si-PIN探测器的小尺寸电荷灵敏前置放大器的设计

doi:10.16257/j.cnki.1681-1070.2023.1213

电子与封装 ›› 2022, Vol. 22 ›› Issue (12): 120307 . doi: 10.16257/j.cnki.1681-1070.2023.1213

用于Si-PIN探测器的小尺寸电荷灵敏前置放大器的设计

张玲玲;何资星;郭凤丽

中国电子科技集团公司第五十八研究所，江苏无锡 214035

收稿日期:2022-05-23 发布日期:2022-11-18
作者简介:张玲玲（1970—），女，江苏泰兴人，本科，高级工程师，现从事特种器件研制。

Design of a Small-Size Charge-Sensitive Preamplifier for Si-PIN Detectors

ZHANG Lingling, HE Zixing, GUO Fengli

China Electronics Technology Group Corporation No.58 Research Institute, Wuxi 214035, China

Received:2022-05-23 Published:2022-11-18

摘要/Abstract

摘要： 设计了一种用于Si-PIN探测器的小尺寸电荷灵敏前置放大器，该放大器采用低噪声、高带宽、双通道运放芯片AD8066，简化了电路结构，减小了空间体积，实现了电荷灵敏前放与成形电路的一体化设计。经过测试发现，在室温环境下，该放大器能有效对²⁴¹Am源和¹³⁷Cs源γ射线进行探测，其测量电子学等效输入噪声约为0.15 fC，成形时间约为2.5 ms，在0.5~100 fC的动态输入电荷范围内，放大增益达24 V/pC，且稳定性良好。此外，该放大器的时间响应速度达10 ns，可应用于高计数率辐射环境下的γ射线探测。

关键词: Si-PIN探测器, 电荷灵敏前置放大器, γ射线

Abstract: A small-size charge-sensitive preamplifier for Si-PIN detectors is designed. In the amplifier, a dual-channel amplifier chip AD8066 with low noise and high broadband is used to simplify the circuit structure, reduce the space volume, and realize the integrated design of charge-sensitive preamplifier and shaping circuit. After testing, it has found that the amplifier can effectively detect γ rays of ²⁴¹Am and ¹³⁷Cs source at room temperature. The measurement electronics equivalent input noise is about 0.15 fC and the shaping time is about 2.5 μs. The amplification gain is up to 24 V/pC in the dynamic input charge range of 0.5 to 100 fC, and it has a strong stability. In addition, the amplifier has a time response speed of 10 ns, which can be applied to γ-ray detection in a high count rate radiation environment.

Key words: Si-PIN detectors, charge-sensitive preamplifier, γ rays

中图分类号:

TN722.3

张玲玲;何资星;郭凤丽. 用于Si-PIN探测器的小尺寸电荷灵敏前置放大器的设计[J]. 电子与封装, 2022, 22(12): 120307 .

ZHANG Lingling, HE Zixing, GUO Fengli. Design of a Small-Size Charge-Sensitive Preamplifier for Si-PIN Detectors[J]. Electronics & Packaging, 2022, 22(12): 120307 .

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中国半导体行业协会封装分会会刊

中国电子学会电子制造与封装技术分会会刊

用于Si-PIN探测器的小尺寸电荷灵敏前置放大器的设计

Design of a Small-Size Charge-Sensitive Preamplifier for Si-PIN Detectors

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