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OPA695输出幅值问题

Other Parts Discussed in Thread: OPA695

按照OPA695datasheet,单片OPA695使用,当G=8时的带宽为450MHz,输出最大能到达+-4.2V。但是我实际做的总是在输出2Vpp以上时,在100M以上就开始出现明显失真。远远没有达到datasheet上的性能。我都是用双面板做的,请问这是由于用双面板来做,阻抗匹配达不到信号反射严重导致的吗?谢谢!