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INA191: differential overdrive含义

zhongfei zhao
Intellectual 300 points
Part Number: INA191

INA191的page17关于轨到轨输出有如下一段话，请问这个-10mV of differential overdrive是什么意思

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    TI__Guru**** 295050 points

    您好，我找了个输入过驱input overdrive的图示方便理解，意思是相对于参考信号的额外的信号幅度，比如80mV参考的GND，加上-20mV的过驱之后，相当于80mV的信号是参考-20mV的。