On Fri, 14 Oct 2016 22:25:55 -0500 David <davidwh...@gmail.com> wrote:
> I have done this and it works great; the breakpoint between the > chopper amplifier and the low noise amplifier can be adjusted to > combine the wideband noise from the low noise amplifier and the 1/f > noise and drift of the chopper amplifier. > > Jim Williams wrote a couple of different application notes where this > was used with both integrated and discrete amplifiers. Yes, there are several appnotes and papers that list this method. But I am not aware of any noise measurement below 0.1Hz for such an amplifier setup. 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 _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.