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Original question:

ISO224: Supply current

ISO224: ISO224

thomas kralj
Prodigy 75 points
Part Number: ISO224


Hi,

I have an application where the VDD1 to GND1 is 5 volts, however I only have 3.3 volts available for the VDD2 - GND2.

Is there a problem running the VDD2 - GND2 down to 3.3 volts? And if so, what would be the shortcoming.

Thanks,

Tom  

  • 0
    TI__Guru 55412 points

    Hi Tom,

    Thanks for your post. 

    To answer your question simply: potentially. 

    The device is specified to run with a VDD2 voltage between 4.5V and 5.5V. That is the voltage that is used during the characterization tests and such during manufacturing. We cannot guarantee how the devices will behave with a 3.3V VDD2 supply voltage since it is not tested during manufacturing and it may no longer meet datasheet performance specifications. Additionally, the devices outputs will not be able to reach full-scale (4V) as the supply will be limited to 3.3V.