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DAC084S085: Power supply rise time requirement

S.Satoshi
Guru 21675 points
Part Number: DAC084S085

Hi,

I know that DAC084S085 has VA and VREFIN and VREFIN can be power-up with tieing VA or after VA. Then is there any rise time requirement for VA and VREFIN? Or it there no requirement and so too fast and slow rise time can be accepted?

Best Regards,

Satoshi / Japan Disty

  • 0
    TI__Mastermind 46290 points
    Satoshi-san,

    I am not aware of any published information for this device, but in general I have seen in the past some sensitivities to extremely fast supply ramps, but not really anything on the slow side. Even on the fast ramp side, usually in practical situations with bulk capacitance and local decoupling capacitance, it is not an issue that gets realized on a PCB.

    Has an issue come up? If so, can you share more details?
  • 0 in reply to Kevin Duke
    Guru 21675 points
    Hi Duke,

    Thank you for your support. Now the customer just start to design the schematic for 1st evaluation board. So any issue has not been come up so far.

    Best Regards,
    Satoshi / Japan Disty