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Reflectation in REFA/REFA* of AD9525

Question asked by Jacky on Apr 16, 2014
Latest reply on Apr 22, 2014 by Jacky

Sir:

 

I use AD9525 in my design, I provide differential clock to input REFA/REFA*. The termination of the input clock is done in the mode of  PIC1 .

A reflection is observed in REFA/REFA*, as PIC2 shows.

 

What's the reason for this reflection?

What's the schematic of REFA/REFA* receiver?

 

Thanks

Regards

Jacky

2014-04-16

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