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AD8348 - Differential AC coupling and performance impact

Question asked by tmain on Aug 28, 2014
Latest reply on Aug 28, 2014 by jdobler

If I use a broadband 4:1 balun instead of the minimum loss L pad to transform from 50 ohms unbalanced to 200 ohms balanced, can I ac-couple the balun outputs into *both* differential inputs (IFIP and IFIN) of the AD8348? If so, how does that affect gain or noise figure or compression point?

 

The configuration is shown below;

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