From: [email protected]
Date: Thu May 10 2001 - 08:46:22 PDT
Hi all,
I have the following stackup in a testing board form mixed-signal
devices:
digital signal
digital ground
analog signal
digital ground
digital signal
The digital signals have a risetime of 500ps. The analog signals are
slow, nearly DC, but of little amplitude. When digital signals are
switching, I have some noise induced in the analog traces. I suspect
this is due to induced magnetic fields into analog traces.
Is it due to wrong layer stackup ? If yes, how can I improve it ?
Thank you for everything
Diego Koch
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