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(ADuM14x)Why ADum14x outputs noise at 700MHz?

Question asked by donadona999s on May 9, 2018
Latest reply on Jun 6, 2018 by donadona999s

Hi !

 

I already asked about EMI.

(ADuM14x)Do you have the test result about noise? 

 

Q1)

Why there is peak at 700MHz?

Do you have some kind of oscillator at this frequency?

Q2)

Do you have any advice to reduce this peak?

Only ”Edge guard" and "Overlapping Stitching Capacitor"?

 

Q3)

If we use ”Edge guard" and "Overlapping Stitching Capacitor", how much noise can be reduced?

http://www.analog.com/media/en/technical-documentation/application-notes/AN-1109.pdf 

Is there measurement result of ADuM14x when stitching is used?


Best regards

Kawa

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