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放大器在 multisim 中仿真的问题

Other Parts Discussed in Thread: OPA227, LM6211, LM318, OPA704

multisim里仿真TI的opa227。我看到opa227的单位增益带宽积(GBW)是8MHz,为什么我搭的仿真结果,频率2MHz的时候,反向单位放大的结果出现明显的畸变和衰减?谁能指点一下,谢谢各位了,是不是我对GBW的理解有误,我想multisim的模型应该不会错吧?

选了好几个器件,opa704,lm6211,都有这个问题,不过lm318的仿真结果是对的,15MHz的衰减为-3dB