[volt-nuts] How to keep voltage stable in the sub-100nV range?

[Attila Kinali]

Hi,

I have a "small" side project, which involves keeping a voltage stable
to better than 100nV over the period of several seconds. Ie. a DAC
produces an output and a chain of opamps and low pass filters feeds
it to the consuming device. The absolute value and drift over more
than 10-100s is not that important.

As I lack a lot of knowledge in this field, I would like to ask
whether someone can point me at literature or give me some terms
to search for that help me to figure out whether this is actually
feasible and how I could achieve that. I know the basic literature
on noise and how to deal with that. What I am interested in are the
real world problems, how big they actually are and how to deal with them.

			Attila Kinali

-- 
It is upon moral qualities that a society is ultimately founded. All 
the prosperity and technological sophistication in the world is of no 
use without that foundation.
                 -- Miss Matheson, The Diamond Age, Neil Stephenson