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第一个图,以地为参考,第二个图以Midrail为参考,没看懂,大神解释一下吧
你可以看下datasheet Table1 和Table2的例子,以负压为参考,Vin+输入是以Vin-=0V为参考的,-2V~2V的共模电压为0V,以1/2Vcc
为参考的,Vin+是以2.5V为参考的,0.5V~4.5V的共模电压为2.5V。