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AD9517 LVPECL output interface to a fanout buffer

Question asked by GuiX on Mar 23, 2015
Latest reply on Mar 24, 2015 by GuiX

Hello everyone:

 

I am using one AD9517-0 LVPECL output to drive a fanout buffer to convert the signal to two LDVS signals.

In the AD9517-0 datasheet I can see this figure to interface LVPECL stages:

AD.bmp

 

On the other hand, in the datasheet of the fanout buffer, I can see this other configuration:

 

ICS.PNG

My dessign follows the AD recomendation (first schematic) and incorporates R1 to R4 of the second schematic.

 

 

Question: Should I keep the 100 Ohn resistor at the imput of the receiver (as proposed in the AD schematic)?

 

Thanks in advance

 

Regards

 

 

GuiX

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