LVDS specifications

Q 

I'm using a AD9518-4 and using lvds for refin signals. In data sheet it is
specified 250mV typical but I also want to know min and max voltage for lvds
refin signals.

 

A 

Generally, the min input amplitude sensitivity for an LVDS receiver is 500 mVpp
differential, and it is typically 800 mVpp differential.

The datasheet specification for Input Sensitivity means that AD9518-4 is fine
with 1/2 of that 500 mVpp amplitude. Thus, the specification of 250 mVpp
differential or 125 mVpp per leg.
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