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AD9915 Output Termination

Question asked by Uberjuju on Aug 29, 2013
Latest reply on Aug 29, 2013 by Uberjuju

Possibly silly question, but the built in 50 ohm pullups to AVDD on the AD9915 output can be considered part of the output termination, yes? So I can just go into a 100 ohm line to line resistor and then my 1:1 transformer (with center tap to AVDD)? Image attached. The 50 ohm ressitors are inside the AD9915.

 

termination.bmp

 

Just never used a current sink output with built in pullups. I see the eval board has the external pullups marked DNI, but wanted to double check before committing to hardware.

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