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ADS5409: Question about Absolute Maximum Ratings

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Replies: 2

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Part Number: ADS5409

Hi Team,

I have a question that I'd like to get your help on regarding the ADS5409.

My customer is wondering if applying a differential signal less than 3.3V to the input pins before its supply voltage rails come up has the potential to damage the device. 

I noticed the datasheet defines the max voltage at INA/B_P and INA/B_N to be AVDD33 + 0.5V and a min of -0.5V. This leads me to believe the max differential voltage that can be applied while AVDD33 = 0V would have to be less than or equal to 1V.

Can you please confirm that this is correct?

Thanks,
Mitchell

  • Hi Mitchell,

    I have forwarded your question to the engineer responsible for the device and he will get back to you.

    Regards,
    Vijay
  • In reply to Vijayendra Varma Siddamsetty:

    Hey Mitchell,

    Technically we do not recommend that any signal be applied to the inputs before the device is powered on.

    Thanks

    Yusuf

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