If the input difference voltage is over 250mV, can it damage the AD8211?

Document created by analog-archivist Employee on Feb 23, 2016
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If the input difference voltage is over 250mV, can it damage the AD8211?

 

If the input differential voltage goes to 600mV, then input ESD diodes that are
located between the two input pins, will turn on. If the current is not
limited, should this happen, then there is a possibility that the diodes will
get damaged and therefore the AD8211 will get damaged.  If the max current is
indeed 10A and the shunt is 10mOhm, then the differential input should never
get higher than 100mV, and the AD8211 should not have any issues.
To add further protection, the customer can add two small resistors in series
with the inputs which would limit the current should the internal ESD diodes
turn on.

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