Author Topic: Gigabee B2B connectors, supply decoupling  (Read 6933 times)

rifo

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Gigabee B2B connectors, supply decoupling
« on: August 08, 2011, 01:58:42 PM »
Hello,

There are pins for 1.2V, 2.5V and 1.5V in the B2B connectors. While designing a headerboard, should one decouple these pins even if they are not used in the design. Can I simply let them unconnected?

thank you very much
rifo

Thorsten Trenz

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Re: Gigabee B2B connectors, supply decoupling
« Reply #1 on: August 09, 2011, 09:56:38 AM »
Hi,
as these pins are also used as high frequency return paths, it is always a good Idea to decouple them with 10nF - 100nF. If you do not use the IO Pins near them, you can omit the decoupling.

best regards
Thorsten Trenz


rifo

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Re: Gigabee B2B connectors, supply decoupling
« Reply #2 on: August 09, 2011, 05:06:18 PM »
Hello Thorsten,

Thanks for your reply. I have added 100 nF capacitors to those pins.

mit freundlichen GrĂ¼ssen :)
rifo