[SI-LIST] Re: Decoupling capacitors

 
On a slightly tangential topic. Have you ever wondered the need for 100pf caps. 
Everyone just seems to sprinkle them as a safety measure but I see no need for 
them because
- the IC by itself will have about 50-100pF. I checked with many IC guys and 
the ICs where you really need decoupling are generally big enough to have that 
much decoupling on-chip. 
- On top of this you have inter-plane caps.

I have seen many of my designs get away with no 100pF caps. I would use 1nF and 
0.1uF, rather than 100pf, 10nF and 0.1uF. Anyone have any other experience...



------------------------------------------------
Join Excite! - http://www.excite.com
The most personalized portal on the Web!


------------------------------------------------------------------
To unsubscribe from si-list:
si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field

or to administer your membership from a web page, go to:
http://www.freelists.org/webpage/si-list

For help:
si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field

List archives are viewable at:     
                http://www.freelists.org/archives/si-list
or at our remote archives:
                http://groups.yahoo.com/group/si-list/messages 
Old (prior to June 6, 2001) list archives are viewable at:
                http://www.qsl.net/wb6tpu

Other related posts: