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OPA2277UA单电源供电为何不正常

Other Parts Discussed in Thread: LM358, OPA2277

电源电压5V, 为什么V-输入电压和输出电压Vo都不正常,换了LM358反而接近正常电压。在线求高人指点

  • OPA2277的输入共模电压范围为(V-)+2V~(V+)-2V,也就是说,5V单电源供电的话,输入至少要在2V,输入电压范围为2~3V。 因此V-为430mV的话,这个电压范围是处理不了的。而LM3568的输入电压范围为0V~(Vcc-1.5)V。