光电检测前置放大电路设计及稳定性分析

摘要

The design quality of pre-amplifier circuit in photoelectric detector can directly affect the properties of a whole detection system. In order to get a perfect photoelectric detection pre-amplification circuit,a photodiode working in photovoltaic mode was selected,and then a photoelectric detection pre-amplification circuit with low input bias current and low noise amplifi-er was designed. The stability for conversion circuit is analyzed in this paper. The basis of choosing the relevant parameters of the components in conversion circuit is given. The circuit has achieved good results in practical application.%光电检测前置放大电路的设计直接影响整个检测电路的性能。选择光电二极管在光伏模式下工作，使用低输入偏置电流和低噪声放大器，设计了光电检测前置放大电路，重点分析了转换电路的稳定性，给出了转换电路元器件参数选择的依据。电路在实际应用中取得了良好的效果。