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运放做跟随器,同相输入端接地,运放的失调电压只有30uV,但运放输出端电压为260mV,为什么输出这么大?为什么输出电压不是失调电压?而且运放供电是单电源和正负电源供电时,运放输出电压还不一样,如下图。请大神帮忙解答下,不胜感激!!!

Other Parts Discussed in Thread: OPA140

运放输入输出限制.pptx