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模拟开关跟多路复用器应用区别

您好,我想请问,模拟开关跟多路复用器有什么区别。比如单刀双掷开关,是不是就是2选1的多路选择器,只是模拟开关是1:2,AMUX是2:1?我理解的区别是模拟开关的状态要么通道A导通,要么通道B导通,不能同时导通,然而多路选择器可以将多个通道信号混合同时导通,除此以外,不知道应用上还有什么区别?谢谢!