ISO224的VDD1和GND1之间电压是9V;输入信号Vin与GND1之间保持±12V电压差;VDD2与GND2电压为5V;当GND1-GND2电位差从高压2000V突降到0V时(大约1.5us),ISO224输出信号OUTP和OUTN的电平短时(大约40us)变为GND2后,又恢复正常了。请问是什么原因。
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