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Altera_Forum
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17 years ago

PCB Design Guidelines

I am planning to design a Cyclone III board for a storage system. How do I determine the decoupling capacitor needed to accommodate the core power and IO switching characteristic? By the way, how can...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
17 years ago

Hello

In case of ceramic SMD capacitors use with dielectric X7R or NPO (sometimes called COG). These determines bahavior of capacitor for different temperature, but additionaly these capacitors have higher self resonant frequency which determines when capacitor acts like coil.

Below some materials.

http://www.murata.com/emc/knowhow/pdfs/te04ea-1/12to16e.pdf

Best regards