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ADL5390 signal leakage and output disable behaviour.

Question asked by RichardM on Sep 8, 2017
Latest reply on Sep 8, 2017 by RichardM

I'm looking at using the ADL5390 as a phase shifter for a 50 MHz pulse modulated transmitter drive signal.

The data sheet is not very specific about the signal leakage I can expect which will have some effect of the accuracy of the phase shift achieved when the I or Q gain is near 0.

The increased error in "gain conformity" near "Gain = 0" certainly suggests signal leakage is there.

Can the leakage be "trimmed out" by adjustment of the DC offset of the Baseband (Gain) signal?

I'm also wondering if the output disable reduces the supply current?