ADuM: Are iCoupler products sensitive to external magnetic fields?

Document created by analog-archivist Employee on Feb 23, 2016
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Are iCoupler products sensitive to external magnetic fields?

 

No – unless such fields are extremely strong and of high frequency. Since the
transformers used within iCoupler devices typically measure about 0.5 mm in
diameter, it takes a very high magnetic field rate-of-change to induce a
voltage large enough to cause a performance error. For example, if a wire
carrying a current oscillating at 1 MHz were to be placed 5 mm away from an
iCoupler transformer, the current amplitude that would be required in order to
cause a problem with the iCoupler's performance is 500A! (An analysis of this
can be found in the Applications section of any iCoupler data sheet.)

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