Perry wrote:
OK, but why? The temperature would be stable so the resistorsand reference diode wouldn't drift.
There is a LOT more to making a good temperature-controlled environment than hacking together a DIY oven. That may be fine for stability of tenths of a percent (10e-3), but when stability of 10e-13 is at issue it doesn't pay to start with 50ppm parts and put them in a DIY oven. You need to start with low-tempco parts.
What about newer reference's IC's such as REF 102? I don't want to re-invent thewheel, just learn what is better.
You need to spend time researching the tolerance, noise, and tempcos of two- and three-terminal voltage references. The manufacturers have on-line selection guides that allow you to sort products by any parameter you choose. Most distributors do, too. Or, look at a reference that has done much of it for you -- I suggest the new, third edition of The Art of Electronics, which has table after table of the very information you are looking for.
Best regards, Charles _______________________________________________ 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.
