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ADV7842 output data trace impedances

Question asked by mahesh_gv on Apr 9, 2015
Latest reply on Apr 9, 2015 by GuenterL

Hi,

 

In both Hardware user guide and EVM, Output interface of ADV7842 is used 75ohm series resistors, and i found a note in HUG that trace impedance should be matched to series resistor selected. So are these signals need to be routed as 75ohm signals?

or can I use 22-33/49 ohm series resistor and route them as 50 ohm trace impedance?

 

Since IBIS model for this is not available.. it is been difficult to make a decision on this.

Please clarify me.

 

Thanks,

Mahesh.gv

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