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请教一下专家,对于光电脉冲信号的带宽怎么计算?APD/SIPM这种光器件接收到激光脉冲后,形成了脉冲波形,这种波形不是标准正弦波形。请问这种脉冲信号的带宽是多大,如何选择后面放大器的带宽才能保证这个脉冲信号的不失真?
您好,
推荐您使用GBW > 3*0.35 / tr,tr为上升时间。建议至少留3倍留有余量。
另外需要考虑slew Rate(SR), SR>1.2* Vpp / tr, Vpp为信号峰峰值,建议至少留1.2倍余量。