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Design >> Mixed-Signal Design >> what no-connection pin for?
https://designers-guide.org/forum/YaBB.pl?num=1311919806

Message started by chaojixin on Jul 28^th, 2011, 11:10pm

Title: what no-connection pin for?
Post by chaojixin on Jul 28^th, 2011, 11:10pm

I found that many chips have some no-connection pin. in my opinion, it would be better place as many power pin as possible, especially when the current is large. sometimes it did use more than one power pin, but still leave some pins as no-connection pins. for example, ADI's AD9627. what is these no-connection pins for?

Title: Re: what no-connection pin for?
Post by Frank Wiedmann on Jul 29^th, 2011, 5:39am

These pins might be used for testmodes that the manufacturer does not want to disclose to the end user.

Title: Re: what no-connection pin for?
Post by chaojixin on Aug 1^st, 2011, 8:21pm

thank you!!