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ADV7612 regulator recommendations

AtlFAE
on Jun 27, 2016

When using the ADV7612, which regulators should be used from the eval board?  I remember this part

is sensitive to noise and I am thinking this is mainly an issue with the 1.8V vcc rail.  Are there are voltage

rails that should be copied from ref design to avoid possible issues (I/O voltage, etc...)?

Thanks,

Sonya

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    •  Analog Employees 
    on Jun 28, 2016 12:52 AM

    Hi Sonya,

    For the ADV7612 on EVAL-ADV7612-7511, I used an ADP1715-3.3 to generate 3.3V from 5V and an ADP1715-1.8 to generate 1.8V from 5V.

    I don't think we've had any issues with this approach, but the 5V to 1.8V is quite a large voltage drop, so on the EVAL-ADV7625-SMZ, I used a switching regular (ADP2114) to generate 3.3V and 1.8V in a more efficient manner. I didn't see any issues with that approach either.

    -Matt

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    •  Analog Employees 
    on Jun 28, 2016 12:52 AM

    Hi Sonya,

    For the ADV7612 on EVAL-ADV7612-7511, I used an ADP1715-3.3 to generate 3.3V from 5V and an ADP1715-1.8 to generate 1.8V from 5V.

    I don't think we've had any issues with this approach, but the 5V to 1.8V is quite a large voltage drop, so on the EVAL-ADV7625-SMZ, I used a switching regular (ADP2114) to generate 3.3V and 1.8V in a more efficient manner. I didn't see any issues with that approach either.

    -Matt

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