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ADS804E Power Sequencing

takishin
Expert 2360 points

Our customer has a question about ADS804E.
I'm posting the questions for a customer:

++++++++++++++++++++++++++++++++++++++++++++++

ADS804E;

Is there any power on sequence requirement for Vs and VDRV?

Please let me know the sequencing and the timing.

++++++++++++++++++++++++++++++++++++++++++++++

Thanks in advance.

Takishin

  • 0
    TI__Guru* 94465 points
    Takishin-san,


    I've moved this post to the High Speed Data Converter Forum from the Precision Data Converter Forum. I believe you will find an answer here.


    Joseph Wu
  • 0 in reply to Joseph Wu
    TI__Mastermind 29220 points

    Hi,

    In general, if the datasheet does not list a power supply sequence, then that would be because we do not know of any requirement for a power supply sequence. Since this is a fairly old datasheet and there is still no power supply sequence called out in it, there would be no requirement for any specific power sequencing.   The only two supplies are the main analog supply and the supply for the output drivers and these can be at different supply voltages, so there would not be an issue of getting some ESD protection turned on accidentally due to one supply up while the other is not - and that would have been the only reason I could think of to have had any power supply sequencing reqirements.

    Regards,

    Richard P.

  • 0 in reply to Richard Prentice
    Expert 2360 points
    Hi,

    Many thanks for your reply.
    I think it is a useful answer.

    Best regards,
    Takishin