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在使用OPA695放大脉冲信号时,当输出饱和时,输出波形有失真,非常严重,是什么原因呢?电路图和输出波形如图所示。
这是阻抗未匹配波形,虽然你已经在端口做了阻抗匹配。只要PCB有明显弯折,阻抗就会突变;产生行波叠加。
所以;一般在接受端口,需要做斯密特整形。