• State TI Thinks Resolved
  • Locked Locked
  • Replies 1 reply
  • Answers 1 answer
  • Subscribers 47 subscribers
  • Views 338 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

AMC3330-Q1: cross current limit

Aivaras Sakauskas
Intellectual 1600 points
Part Number: AMC3330-Q1
Other Parts Discussed in Thread: AMC3330

Hi,

in the datasheet for the device it mentions the cross current through resistive divider is 100uA max, is that a device limit? how is it calculated? what happens if the value is exceeded?

thanks

  • 0
    TI__Guru**** 181981 points

    Hi Aivaras,

    Table 8-1 is simply providing a design example of a voltage sensing application.  The 100 uA noted in that table is not a limit from the AMC3330 standpoint, it is simply a design goal used to select the resistor size at the bottom of the voltage divider while keeping power dissipation relatively low.  Review Table 8-2 and note that 10 kohm by the 100 uA provides the FSR of +/-1V to the AMC3330.  If you wanted to use 200 uA (as an example), you would need to adjust the values of the other resistors in the divider string to keep the same +/-1V FSR range of the AMC3330.