• State
  • Locked Locked
  • Replies 1 reply
  • Subscribers 98 subscribers
  • Views 205 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

Dvdd18 and AVDDAx power supply c6678

die rousseau
Prodigy 120 points

Hi all,

Whether  I can use  a switch power (12v-1.8v) For  DVDD18 power supply and then  use a LDO(3.3-1.8)for AVDDAx.

I'm confuse with the statement.  ' filtered version of DVDD18' in the data sheet.

Does it means only one common power supply source allowed?

Regards, rousseau

  • 0
    TI__Mastermind 30825 points

    The DVDD18 and AVDDAx can come from the same source, but there is more noise sensitivity on the AVDDAx sources and they're required to have noise filters implemented.  This is discussed in further details in the HW Design Guidelines along with reference filter designs.

    Best Regards,

    Chad