一种用于高计数率周期采样的主放及峰值保持电路  

A Main Amplifier and Peak Hold Circuit for Periodic Sampling of High Count Rate

作　　者：郝锐[1] 葛愉成[2] 

机构地区：[1]中国舰船研究设计中心,湖北武汉430064 [2]北京大学物理学院核物理与核技术国家重点实验室,北京100871

出　　处：《核电子学与探测技术》2012年第2期145-149,共5页Nuclear Electronics & Detection Technology

基　　金：国家自然科学基金项目(10827505)

摘　　要：对用于望远镜探测器阵列的主放电路进行了研究,该主放电路主要由集成运放芯片ADA4851-4构成,用于电压信号的放大和整形。同时设计了基于复位芯片OPA615的峰值保持电路,用于电压信号的周期性采样和幅度保持。16路独立的主放及峰值保持电路构成一套高密度的电压信号处理电子学系统,该系统的信号处理能力可满足进行带电粒子阵列探测所需的误差及计数率要求。A main amplifier circuit used for the telescope detector array was studied. The main amplifier circuit was mainly constituted by an integrated op amp chip ADA4851 -4, and used for the voltage signal amplification and shaping. At the same time, a peak hold circuit was designed based on the restoration chip OPA615, used for periodically sampling the voltage signals and maintaining the amplitudes. 16 independent main amplifier and peak hold circuits constituted a high - density voltage signal processing electronic system. The systems signal processing performance, such as error and count rate, was better than the requirements of charged particle detection experiments.

关 键 词：主放大器 峰值保持 ADA4851—4 OPA615 

分 类 号：TL82[核科学技术—核技术及应用]