I designed my first board using AD9959 and benifiting of the evalution board from Analog Deices. It didn't work at all!!!
I assembled another board (same design), unfortuantly, half of the circuit did not work at all (right side of the IC pins 29-42); no output at Ch0 or Ch1 and I couldn’t use the profile pins p0,p1,p2.
I redesigened another board with some trivial modifications; I had another kind of problem. I could output signal at all channel outputs, but I could not use the profile pins P3 & P4; they are stacked to "one" even when the input is "zero".
I think all the ICs ad9959 I used have certain fabrication faults (they are imported from China).
Did anybody encounter such problems?
Any explinations or remarks are highly welcomed.