Hi Ovenized MEMS oscillators have been around for quite a while. They go back at at least a decade and likely quite a bit further.
Bob > On Nov 16, 2018, at 12:03 PM, Chris Caudle <[email protected]> wrote: > > I did not see any mention of this on the list. Could be interesting in > some contexts: > https://www.sitime.com/company/news/press-release/sitime-launches-emerald-platform-game-changing-mems-timing-solution-5g > > An oven controlled MEMS oscillator. I saw a sample recently, the idea > seems to be to take a small MEMS based temperature compensated oscillator > circuit, and put it in a very small oven (9x7x6.5 mm). Because the > circuit already has temperature compensation (pretty intrinsic to MEMS > designs) the oven control does not have to be quite so tight, giving some > flexibility on size. > It is not a direct replacement for an SC cut quartz, but in contexts where > low power and small size is more important than lowest phase noise it > could be very useful. Stability and accuracy should be pretty reasonable > (claimed as 5ppb), and the aging claims look good, although I do not have > a good understanding of aging process in MEMS based oscillators, so I > don't know how much faith to put in low aging claims yet. ADEV is quoted > as "2e-11 ADEV at 10 sec under airflow." > > -- > Chris Caudle > > > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
