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OPA1632 全差动运放的输入问题

Other Parts Discussed in Thread: OPA1632, THS4130, ADS1271

在OPA1632的平衡式应用电路,输入是一对以1伏为基准、振幅为1伏的差分信号,电路工作后,在电压低的输入端的电压被拉高,请问这是怎么回事?

如果输入是一对以地为基准的话,就没有类似现象,是否OPA1632输入的差分信号必须大小相等、极性相反吗?