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[ LM48100-Q1 ] Power Supply Questions

Kenichiro
Mastermind 9165 points

[ LM48100-Q1 ] Power Supply Questions

Hello expert,

Can you help me to address following queries my customer?  Here I have some power supply related questions.

<Q1>: Power Supply Sequence

Is there any requirements and/or restrictions on power supply sequence between PVDD, VDD and I2CVDD?

<Q2>: Power Supply Slew-Rate

Also slew rate (time) requirement?

<Q3>: Power Supply Combination

In case that VDD and PVDD are not supplied, but I2CVDD supplied, does this cause any damage or issue?

Thanks so much for your support!
Regards,
Ken

  • 0
    TI__Mastermind 20085 points
    Hi Kenichiro

    I'm going to research and come back to you as soon as possible with this information.

    Best regards
    José Luis Figueroa
    Audio Applications Engineer | A-Team
  • 0 in reply to José Luis
    TI__Mastermind 20085 points
    Hi Kenichiro

    There isn't any requirement or restriction regarding power supply, but you must take into account that VDD turn on all the device, PVDD just turn on amplifier output and I2CVDD turn on the I2C control circuit. Regarding Slew-Rate, there isn't any requirement either.
    You shouldn't have any issue, if you just feed I2CVDD.

    Best regards
    José Luis Figueroa
    Audio Applications Engineer | A-Team
  • 0 in reply to José Luis
    Mastermind 9165 points

    José,

    Thank you for confirmation, it's good to use that LM48100-Q1 actually has no power supply related issues.

    Thanks,
    Ken