低噪声电荷灵敏前置放大器的噪声分析  

Noise Analysis of A Low Noise Charge Sensitive Preamplifier

作　　者：陈波[1] 刘松秋[1] 薛志华[1] 赵捷[1] 

机构地区：[1]北京大学物理学院技术物理系,北京100871

出　　处：《核电子学与探测技术》2008年第3期612-614,626,共4页Nuclear Electronics & Detection Technology

摘　　要：本文从基本的噪声模型出发,对自制前置放大器进行定量的噪声分析,并与Pspice仿真和实际测量的结果进行比较。给出等效输出噪声谱、等效噪声电荷、噪声斜率计算的实用公式,供电荷灵敏前置放大器的设计和改进使用。On the basis of the traditional noise model, this paper makes a quantitative noise analysis of a self-made charge sensitive pre-amplifier and compares its result with that of Pspice simulation and practical measurements. Moreover, this paper figures out the practical formulas for the spectrum of output noise, the equivalent noise charge（ENC） and its slope respectively, thus facilitating the design and improvement of pre-amplifier.

关 键 词：噪声模型 电荷灵敏前置放大器 

分 类 号：TL82[核科学技术—核技术及应用]