I am using the ADL5569 op amp to an ADC and am currently doing a line up analysis of the system. I want to use the single -ended input configuration determine the power gain of the system. The datasheet lists the voltage gain only. Using the s-parameter data, I was hoping to calculate a small signal gain approximation of the power gain (with the input matching network from 50 ohm) to place into my line-up analysis. How would I go about this? I am using an ideal transformer at the output which transforms the signal to a 50 ohm single ended output to estimate the gain, but the result does not make sense.
Am I interpreting this correctly? How exactly is the voltage gain measured, as in how is R_L loaded and where is Vout being measured?