Differential Pair Length Matching
A fundamental constraint rule in high-speed digital design that requires the two traces of a differential signal to be equal in length, so as to prevent timing skew from being converted into common-mode noise and to ensure signal integrity.
Timeline (last 90 days)
Differential signaling relies on the voltage difference between two traces to transmit information; if the two lines are not the same length, the arrival time difference at the receiver turns into common-mode noise, and in severe cases causes bit errors
In engineering practice, the length difference between the two lines of a differential pair is usually required to be kept within a few mil to a few tens of mil
All Facts (2)
Differential signaling relies on the voltage difference between two traces to transmit information; if the two lines are not the same length, the arrival time difference at the receiver turns into common-mode noise, and in severe cases causes bit errors
50%UnverifiedIn engineering practice, the length difference between the two lines of a differential pair is usually required to be kept within a few mil to a few tens of mil
50%