最近要做一个测量多路信号压差的项目,每个通道的电压都在400V左右,通道间的压差大概在2V左右,不知道有什么好方法?ps:本来想用AMC1200,但是看到datasheet上面说每个引脚的输入电压不能超过VDD+0.5,所以只能分压,但是分压的话压差也就被分到很小了。肿么办?
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