LM358做跟随器时，输入端是电阻采样，为9.9MΩ和100kΩ分压输入，在这个高压信号变化的时候，输入端电压会莫名抬高0.5V，稳态没怎么变化，跟随的很好，只有在高频信号来的时候发生这种事情，请问是为什么？
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LM358做跟随器时，输入端电压会抬高0.5V
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