We are using the ADV7391BCPZ video encoder and want to confirm that 2.5V I/O voltage is stable with this chip.
We have a rev-1 prototype that may have a flicker once in awhile in the composite video. We see this on an LCD and not on an old fashioned CRT or on a scope terminated to 50 ohms. Could the I/O voltage running at 2.5V be an issue.
For VDDIO it says: (Table 3 page 7)
Table 15 (page 20) shows VDD_io as “Input/Output Digital Power Supply (1.8 V or 3.3 V).” And digital input/output specifications are only listed for 1.8V and 3.3V modes.
So I am concerned if we are OK to keep running the I/O voltage at 2.5 volts