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OPA657输出接TLV3501比较器后附加了直流偏置,无法过零检测

Other Parts Discussed in Thread: OPA657, TLV3501

OPA657过电容后输出是没偏置的,但是一接上TLV3501就附加了2.5V的偏置,导致其无法过零检测,这种情况怎么办?