I plan on using a CDCLVP1102 device to distribute two 156.25MHz reference clocks. I currently have an LVPECL source clock feeding the IN_p/n pins of the CDC part. I'm terminating each leg of this input clock with a 124/82.5ohm thevinin (fed by 3.3V), as per figure 7 of the CDC datasheet. What should I do with the unused VAC_REF pin? Leave it floating?
thanks,
Mark
