Can these devices isolate (filters out) high frequency noise.
The ADuM3440 doesn’t explicitly filter high frequency noise, but it does block
current flow from one side to the other so noise is isolated. The typical
capacitance across the isolation barrier is 2.2 pF, so a small amount of nose
at 400 MHz might be seen.
We advise designer's to use extra filtering from traditional techniques to
boost the filtering performances.