多通道双增益高速放大器的研制  

A high speed dual-gain preamplifier system with multiple channels

作　　者：赵雷[1] 刘树彬[1] 冼泽[1] 安琪[1] 

机构地区：[1]安徽省物理电子学重点实验室,中国科学技术大学近代物理系,合肥230026

出　　处：《核技术》2008年第4期298-302,共5页Nuclear Techniques

摘　　要：本文介绍一个多通道双增益高速放大器插件的设计,分析了该放大器系统的设计原理,介绍了测试方法及其性能指标。该插件采用高速电路设计,对快脉冲信号放大具有出色性能,其中2倍和8倍增益通道的3dB带宽分别大于440MHz和280MHz,本征上升时间小于2ns。该放大器系统已通过性能测试,并用于丰中子区放射性核素的β缓发实验中。In this paper, a multiple-channel high speed preamplifier module with dual-gain is presented, together with its design principle, test methods and performance parameter. By proper choice of the chips and careful circuit design, the preamplifier accomplishes a fine performance in high speed analog signal processing. The 3 dB bandwidth is above 440 MHz for gain factor of 2 and 280 MHz for gain factor of 8, with the leading edge time of less than 2 ns. The preamplifier module has been used in the research project of β-delayed neutron emission of radionuclides in neutron-rich region.

关 键 词：前置放大器 带宽 频率响应 线性动态范围 恒比定时甄别 

分 类 号：TN722.71[电子电信—电路与系统] O572.213[理学—粒子物理与原子核物理]