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ADV3220 Supply

Hi,

I need to mux a video signal that is all positive (0V to 2V).

It is possible use ADV3220 with supply 0/5V or we must use Dual supply and so -5V/5V?

regards,

Dario

Top Replies

  • FormerMember
    FormerMember
Jul 29, 2019 +1 verified

The specifications for the ADV3220 are with +-5V rails.

It is also spec'd at 0-12V rails but the real problem here is the video signals would have to be AC coupled and biased to ~mid-point for proper operation…

The specifications for the ADV3220 are with +-5V rails.

It is also spec'd at 0-12V rails but the real problem here is the video signals would have to be AC coupled and biased to ~mid-point for proper operation.  This is a more complex circuit.

The device is not spec'd with 0-5V rails.

It is best to keep the video signal DC coupled so the black level is 0V.  And best to run the ADV3220 with +-5V rails.

If you need to generate 5V DC then you might look at devices like the LTC1983

https://www.analog.com/en/products/ltc1983.html#product-overview

Pay attention to the output ripple voltage and you should be good.