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AD97890 EVA broad Outout

Question asked by Osamu on Nov 13, 2014
Latest reply on Nov 13, 2014 by danf

Hello.

 

I have a question of AD9789 EVA broad output.

I read AD9789-EBZ RevA Schematic, In circuit it used output trance JTX-2-10T.

I watched JTX-2-10T datasheet , it has 75 ohm impedance.

 

 

In many cases, a circuit  uses 50 ohm impedance.

(For example. AD9739 output match is recommend 50 ohm match@D/S P42. It's likely  AD0789 DAC core)

 

Why do you use JTX-2-10T.?

 

Best regard.

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