3.2.1.1 Differential Traces
(Ask a Question)A well-designed differential trace must have the following qualities:
- No mismatch in impedance
- Insertion loss and return loss
- Skew within the differential traces
The following points must be considered while routing the high-speed differential traces to meet the previous qualities.
- The traces should be routed with tight length matching (skew) within differential traces. Asymmetry in length causes conversion of differential signals in Common mode signals.
- The differential pair should be routed such that the skew within differential pairs is less than 5 mils. The length match should be used by matching techniques.