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DAC161S997: ESD Discharge Routing

Cameron Perl
Expert 3990 points
Part Number: DAC161S997

Hey team,

I had a customer who was wondering if an ESD route that went through the reference ground / DAC161S997 internal 40 ohm resistor would be acceptable or cause issues? They can route around the DAC via another node but were curious if this was an option. See the below diagram for the path of the ESD through the device's reference ground:

Thanks!

  • 0
    TI__Guru* 92715 points

    Cameron,

    I don't know of any specific issues, but I would route the ESD current a different way.

    ESD events can be high in voltage and current. In most ESD events, we route these currents through ESD diodes that are designed to take a high current and shunt it directly to ground. In this case you would be routing the current through a sensitive, precision part of the device.

    Again, I don't know of any issues with this, but I would certainly try to avoid sending the current through the device.

    Joseph Wu