基于单片机多模式控制的APD偏压电路模块设计  

Design of APD Bias Circuit Module Based on Multi-mode Control of Single Chip Microcomputer

作　　者：张建华 尹俊 朱斌[1] 何达 柳稼齐 ZHANG Jianhua;YIN Jun;ZHU Bin;HE Da;LIU Jiaqi(Chongqing Optoelectronics Research Institute,Chongqing 400060,CHN)

机构地区：[1]重庆光电技术研究所,重庆400060

出　　处：《半导体光电》2022年第2期400-404,共5页Semiconductor Optoelectronics

摘　　要：针对雪崩光电二极管(APD)应用多样化的需求,提出多模式控制的APD偏压电路模块设计方案。基于APD工作原理,分析了APD增益系数、反向偏置电压、工作温度三者之间的关系,设计了具有多模式工作的APD偏压模块硬件电路,开展了详细的单片机软件功能设计。结合雪崩光电二极管进行了实验验证,结果表明在-40~+60℃温度范围内,该偏压电路模块具有温度补偿及多模式切换功能,输出电压偏差小于0.5 V,纹波小于100 mV,可实现APD多模式工作,满足工程化应用需要。In response to the diverse applications of avalanche photo-diode(APD),a design solution of bias circuit module with multi-mode control was proposed.Based on the working principles of APD,the correlation among gain coefficient,reverse bias voltage and operating temperature was analyzed.The bias circuit modules with multi-mode control were designed,the software design was realized on the single chip microcomputer,and the module was analyzed and verified by experiments.Experimental results show that the bias circuit module with multi-mode control and temperature compensation is available in the temperature range of-40~+60℃,the deviation of the output voltage is less than 0.5 V,and the ripple is less than 100 mV.The module can realize APD multi-mode operation and meet engineering applications.

关 键 词：雪崩光电二极管 反向偏置电压 温度补偿 多模式控制 偏压电路 

分 类 号：TN312[电子电信—物理电子学]