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TLV3501无论正相反相输入哪个大,最终都输出了高电平的问题

Other Parts Discussed in Thread: TLV3501

如上图所示是我的一个仿真图,我使用面包板将这个电路接好了,测得正相输入在有光照的时候为4.4V,无光照的时候为5V,而我将滑动变阻器调节至输入电压为4.7V,但是无论有无光照,测得TLV3501的输出都为高电平,而且将正反相输入反接也是输出高电平,这是为什么?