如下图,差分信号幅值应该在700-1200mv之间,但是我们实机的差分信号约为400mv,这是为什么?LVDS输出不接负载的时候也是这样的。
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LVDS的Swing标准是400mV ,Voh=1.4V ,Vol=1V,Vcm=1.2V;所以你测量的是正确的,没有问题。