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Does termination resistor on differential pair brought mismatch to differential impedance?

Fakhri
I am working on high speed 8 layer HDI design. My design include differential pairs with 100 ohm diff. impedance. I have 100 ohm termination at receiver side for each of these differential pair.
I have crosschecked the impedance of these line in Cadence impedance workflow  and  observed a impedance mismatch at termination resistor location. The usual value of diff impedance is around 100 ohm while at termination resistor, impedance value around 168 ohm.
Could anyone please suggest any solution or trick to tackle this mismatch?
The resistor has smd 0402 package, does this mismatch will degrade my signal quality?
Many thanks!
  • excellon1
    0 in reply to jc teyssier

    Hi JC

    Excellent write up there from Intel.

    Thanks for sharing

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