Dear all,
We are designing a new ECU which is by now in prototyping phase and have succeeded in all EMC tests except for Bulk Current Injection test. We would like to protect our analog input by adding some elements to reject high frequencies and don't know how to do it.
In the following picture you can see what we have by now. We are thinking of adding a ferrite between the pull-up/pull-down resistors and the RC filter to reject high frequencies above 20MHz. Do you think this is a good idea? Is there any other solution that you could suggest? There is no problem for us to redo any part of the design to include new integrated solutions if necessary.
Thank you very much for you kind support,
Best regards,
alvaro
