[time-nuts] SiTime Stratum 3E DCOCXO

[Bob kb8tq]

Hi

Indeed, they are pretty amazing for a tiny little part. Ultimately physics does
catch up with them. The resonator in the heart of the device has it’s limitations
compared to a big chunk of quartz.

Things like ADEV or phase noise aren’t their strong suit when compared to a 
good OCXO. Note that the OCXO would be much larger and would probably 
pull a lot more power. It’s a good bet that the silicon gizmo will withstand a much
harsher environment ( shock / vibe / acceleration …..) without there being much
impact. 

How useful are they? It very much depends on what you are trying to do ….

Bob

> On Oct 30, 2020, at 7:27 AM, John Moran, Scawby Design <john at scawbydesign.co.uk> wrote:
> 
> Does anyone have any knowledge of the suitability of these silicon vs quartz frequency sources for TimeNuts applications?
> 
> https://www.sitime.com/products/stratum-3e-dcocxos/sit5721
> 
> The published specs seem quite remarkable for a device that is 5 x 7 x 9mm
> 
> You have to request a data sheet, which is then for your eyes only, but they are quite forthcoming with that.
> 
> I have requested a price for a one-off sample and will report back if and when they respond.
> 
> John
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