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CMRR仿真和TI文档不一致

附件PDF 25页CMRR仿真结果的如下图

我画的电路和PDF完全一样,可是仿真结果相差好大

上传下我的仿真,CMRRBB

CMRRBB.TSC

不知道TI文档的VCM具体是什么信号