I have a design that the diff-pairs (100 Ohm impedance) and single-ended (50 Ohm impedance) are routed on the same layer. To specifying the impedance, on the “Lamination Stack-up”, I am going to add the information like this; INT1 (TW=0.006” Z0=50 ohm / Z0=100 ohm DIFF-PAIR). Is this OK?
In this case, the fabrication vendor will determine dielectric thickness based on the TW, trace spacing, and material on their own to achieve required impedance. Right?
In other case, if the trace width of the diff-pairs are different to the trace width single-ended, can I apply this way to call out?