[time-nuts] Low Allan Dev Oscillators

Said Jackson saidjack at aol.com
Mon Sep 2 17:29:19 UTC 2013


Hello Steve,

Nice plots. Not bad ADEV. Not quite as good as a typical BVA, but respectable.

Who makes these and what package are they in?

Thanks,
Said

Sent From iPhone

On Sep 2, 2013, at 3:00, "Martyn Smith" <martyn at ptsyst.com> wrote:

> Hello,
> 
> I mentioned about there being other low Allan Dev oscillators available on
> the market.
> 
> Said asked me to supply some results (And Yes Said, I meant 1 x 10E-13)
> 
> I'm not sure if attachments work on timeouts, so I have put a couple of
> graphs on my website.
> 
> These graphs show typical results for our low noise 10 MHz oscillator.
> 
> This oscillator hasn't been optimised specifically for Allan Dev or phase
> noise, just the best combination of both.
> 
> We can achieve better phase noise at 1 Hz, -120 dBc being achievable, if we
> select the best oscillator from a batch.
> 
> And the Allan Deviation is only after the oscillators have been on a day or
> so.  They will improve if left on longer.
> 
> www.ptsyst.com/10MHzPN-1.pdf
> 
> We have improved the phase noise at 100 Hz and get about -156 dBc these days.
> 
> www.ptsyst.com/10MHzAD-1.pdf
> 
> Best Regards
> 
> Steve
> 
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