For those of you wanting to know about opamps, A/D, D/A, filters,
oscillators, and so forth, T.I. has an excellent publication you
might want to look at. It is 464 pages long (yikes!) and weighs in
at 2 megabytes. It is NOT a beginner's cookbook of any sort, but
there is probably enough substance in there for everyone to benefit
from having downloaded it. There is nothing new in it, but it is
nice to have a comprehensive resource in addition to Horowitz &
Hill's "The Art of Electronics".
http://focus.ti.com/docs/apps/catalog/resources/appnoteabstract.jhtml?abstractName=slod006b
Cheers!
Tom Farrand