一种高速宽带放大与峰值保持电路的研制  

A high-speed,wide-bandwidth,amplification and peak-holding circuit

作　　者：彭宇[1] 苏弘[1] 李小刚[1] 李勇[1] 李素琴[1] 千奕[1] 

机构地区：[1]中国科学院近代物理研究所

出　　处：《核电子学与探测技术》2006年第4期514-516,433,共4页Nuclear Electronics & Detection Technology

摘　　要：主要介绍了一种高速宽带放大与峰值保持电路。该电路是根据束流位置监测系统的要求而研制的,是该系统的前端部分。主要包括放大电路和峰值保持电路两部分,其主要特点是采用直流耦合的方式对微弱快电压信号进行多级放大,使得信号在放大过程中不会产生附加相移,此外还采取差分放大的方式来有效地抑制直流耦合带来的直流漂移。电路带宽≥70MHz,增益≥700。A high-speed, wide-bandwidth, amplification and peak-holding circuit is introduced briefly in this paper. This circuit was developed for beam position monitor electronics, it is a key front-end device of the system. It consists of amplifying circuit and peak-holding circuit. It can be used to amplify small, fast voltage signals. In order to keep phase excursion as low as possible, dc coupling mode was adopted to construct the amplifying circuit. Moreover, we take differential amplifier and low-pass filter to restrain the dc excursion. Bandwidth of the circuit is≥70MHz, gains≥700.

关 键 词：高速 宽带 放大 峰值保持 电路 

分 类 号：TN78[电子电信—电路与系统]