I want to amplify the output of AD9913.
So, How shall i interface the complementary outputs to an op amp and amplify the signal with the op amp operating in a single supply of 5V...?
I can advise to refer to the evaluation board circuit schematic of AD9913. As you notice at the output(AOUT and AOUTB), a center-tapped transformer is being used. At the secondary side of the transformer (single-ended input), you can have a buffer op-amp wherein input impedance is close to 50 ohm. After the buffer, you can either have an inverting or non-inverting gain op amp at your choice.
The following tutorial on the ADI webpage also provides circuit examples on interfacing DAC output to Op-amp:
Hope this helps.
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