We are generating the I,Q differential signals at the required level 540mv DC mean and 280mv P-P on each line.
But when we connect the these 4 lines(I+,I-, Q+, Q-) to ADRF, all these four signals are loading and changing values to 540mv mean and 180mv P-P
We tried giving them to 450mv P-P also, still they are attenuating.
What could be the reason? How can I resolve this?