The datasheet for the LMK00804B-Q1 recommends the seconds circuit when using single-ended input on the LVDS port. I have two questions:
- Why does it use a split termination when there is already a series termination on the source? Would there be any problems with simply using a 50 Ω series termination on the source side, and skipping the split termination, if there are no other stubs or destinations on the line (i.e., it is a dedicated 1-to-1 clock)?
- Is the external divider necessary on the mid-biased negative input pin? I'm guessing this is to reduce noise, but is there any information about what kind of impact skipping this will have? The reason I ask is because I plan to use the LVDS input for an external customer input, and placing this RC filter would prevent me from accepting an LVDS input.
