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AD直流电压采样



我用LV25P来采样12V直流电源,经调试LV25P的M输出4.5V正常,但是后面的电压跟随器的Uo位置是13.6V,并没有跟随4.5V。请问是哪里出现了问题,还是我跟电压跟随器设计的不对呢?新人求解。放大芯片用的是OP27GSZ。