QCan you expalin the difference in ESD protection between the ADuM240x and the
ADuM440x icoupler parts?
AIn comparison to the ADuM240x isolators, the ADuM440x isolators contain various
circuit and layout changes to provide increased capability relative to
system-level IEC 61000-4-x testing (ESD/burst/surge). The precise capability in
these tests for either the ADuM240x or ADuM440x products is strongly determined
by the design and layout of the user’s board or module. For more information,
see the AN-793 application note (www.analog.com): ESD/Latch-Up Considerations
with iCoupler Isolation Products.
(Note this application note refers to Standard product families ADuM1xxx and
ESD hardened product families ADuM3xxx. The information in the the application
note also can be applied to Standard product families ADuM2xxx and ESD hardened
product families ADuM4xxx.
The ADuM3xxx (2.5KV) and ADuM4xxx (5KV) are pin and specification compatible
ESD hardened versions of ADuM1xxxx (2.5KV) and ADuM3xxx (5KV)icoupler series.
ADuM1xxx Standard ESD protection, 2.5KV isolation rating
ADuM2xxx Enhanced ESD protection, 5KV isolation rating
ADuM3xxx Standard ESD protection, 2.5KV isolation rating
ADuM4xxx Enhanced ESD protection, 5KV isolation rating