For LVDS, common mode biase shoud be 1.2vx.
you can look at this document for more detail.
AC-Coupling Between Differential LVPECL, LVDS, HSTL, and CML.pdf
Best
Brian
Hi Surender,
The 1.2-V common mode voltage is part of the LVDS specification, so you aren't likely to find any LVDS devices with such a low common mode. The simplest solution in my opinion is to just use series capacitors to AC-couple the buffer's differential…
AC-Coupling Between Differential LVPECL, LVDS, HSTL, and CML.pdf
