On the ADV7181D, what should I do with analog inputs SOG, SOY, AIN[10..1] if these inputs are not used? Can I tie them directly to GND? Tie to GND through a 0.1uF capacitor? Tie to GND through a 1K resistor?
If possible, I would like to tie them directly to GND to save PCB real estate, but I don't want to damage the part in doing so.
Thanks for your feedback.
Because I have 5 of these devices in my design and the design is really crowded, I am going to simply tie the unused SOG, SOY, and AIN inputs directly to AGND. I am only using…
The unused analog input pins(Ain X) of analog devices video decoders can be : 1) left floating 2) connected via a resistor to ground. 3) connected directly to groundPlease note that unused input pins can be connected to ground, however the best practice is to use pull down resistors 1-10k.Any unused AIN input pins should be connected to AGND. It's not a good idea to float them OR Tie Ain to ground through a resistor (1K is good)Note: As per hardware manual it is strongly recommended to connect any unused analog input pins to AGND.
Because I have 5 of these devices in my design and the design is really crowded, I am going to simply tie the unused SOG, SOY, and AIN inputs directly to AGND. I am only using 1 or 2 of the AIN inputs and I need to save real estate.