I have a question about ADV7390.
Our customer checked the supply current with the scope.
yellow;3.3V power supply 2V/div
green;1.8v power supply 2V/div
purple;3.3V supply current 100mA/div
10ms / div
When they input 1.8V after 3.3V, it looks supply current goes lower.
So my questions are these.
Why the 3.3V supply current is higher than when they input 1.8V?
Do you think this current waveform is correct?
It look like there is some spike at supply current waveform when they input 1.8V.
Why this happen?