I'd like to understand what type of performance hit I'd taking driving this part single ended vs differential. Baluns are not an option for my application.
You can use the part single ended as well. You should terminate the unused input output signal pins to GND with a 50ohm resistor. When used single ended, you dont get the benefit of filtering common mode components or supply noise leakage. If these are well taken care of, then there shouldnt be any problems besides halved output swing.
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