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低噪声的电荷灵敏前置放大器是高性能谱仪系统的核心部件,我们自主研制了一种可以用于高分辨率Si-PIN探测器的低噪声电荷灵敏前置放大器,它采用晶体管反馈机制,具有噪声低、计数率高的特点。该电荷灵敏前置放大器主要由一种多功能的场效应管(场效应管芯片内部包括反馈电容和复位晶体管)、低噪声宽频带的运算放大器A、比较器A和R、R和R构成的具有滞后效应的比较器
The low-noise charge-sensitive preamplifier is a core component of a high-performance spectrometer system. We have developed a low-noise charge-sensitive preamplifier that can be used in high-resolution Si-PIN detectors. It uses a transistor feedback mechanism, With low noise, high counting rate characteristics. The charge-sensitive preamplifier is mainly composed of a multi-functional FET (the FET includes a feedback capacitor and a reset transistor), a low noise wideband operational amplifier A, comparators A and R, R and R Comparators with hysteresis