本文介绍一种快速电荷灵敏放大器,它在基本的共源极-共基极组态放大器中插入一个共集电极组态放大节,改善了系统特征方程的根轨迹,增大了回路增益,从而有效地提高了放大器的瞬态响应特性。在外接零电容时上冲小于10％情况下,上升时间小于4.5ns,等效噪声线宽FWHME(Si)约1keV This article describes a fast charge-sensitive amplifier that inserts a common-collector configuration amplification section into a basic common-source-common-base configuration amplifier to improve the root locus of the system’s characteristic equation and increase the loop gain Effectively improve the transient response characteristics of the amplifier. When the external zero capacitance is less than 10%, the rise time is less than 4.5ns, the equivalent noise line width FWHME (Si) is about 1keV