您好，lmh6401实际测试过程中若输入一端接地则频率特性十分不好，即50M左右开始衰减（在TINA中仿真并无此现象）。当输入差分时200M(仪器限制)频率内输出的2路并不相同，表现为频率升高一端VPP增大，另一端VPP减小，但差分值基本不变，请问这两种情况是正确的吗，可否解释一下原因........
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