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设计了OPA657的两级运放,出现了波形失真,并频谱图上出现在300MHz的地方出现一个突起。

Other Parts Discussed in Thread: OPA657

如题,楼主新手一枚。因为OPA657的单位增益带宽大,有1.6G。所以选了它,尝试着设计了OPA657的两级运放,分交流和直流输出。结果出现了波形失真,并频谱图上出现在300MHz的地方出现一个突起。所以在论坛里发帖,向各位求教...

如下图。