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LMX2592输入参考信号幅度的理解

Other Parts Discussed in Thread: LMX2592

在LMX2592的datasheet中reference input signal 在ac耦合情况下,单端输入时,幅度最小值为0.2Vppd,幅度最大值为2Vppd。

这里有两种理解:1.输入信号的最大值只要大于0.2Vppd,小于2Vppd,最小值大于0V

                             2.  0.2v<输入信号幅度<2v    最大值小于2Vppd,最小值大于0.2v

  在8.1.3节又有说标准的时钟输入:LVDS/LVPECL/HCSL/CMOS都可以

该如何理解LMX2592对输入参考信号幅度的要求?