[time-nuts] CSAC vs NAC1

paul swed paulswedb at gmail.com
Thu Apr 6 20:11:29 EDT 2017


Jim am I reading the casc power consumption correctly? .12 and .14 W.
Thats 10X lower.
Any idea on the $$
Regards
Paul
WB8TSL

On Thu, Apr 6, 2017 at 6:11 PM, jimlux <jimlux at earthlink.net> wrote:

> Here's a quick summary of the datasheet performance between the
> Vectron/Accubeat NAC1 and the MicroSemi CSAC.  Bear in mind that Microsemi
> now has a wider temp range (i'm using the old rev J datasheet)
>
> CSAC is 1/10th the power
> NAC1 has a better crystal, so the phase noise is better
> the "atomic" part is comparable in performane
>
>
> Parameter       NAC1            CSAC
> Aging           3E-10/mo        9E-10
>                 1E-9/yr         10E-9
>
> ADEV            2E-11 @ 100sec  2.5E-11
>                 8E-11 @ 10      8E-11
>                 2E-10 @ 1 sec   2.5E-10
>
> phase noise
>                 -86 @ 10        -70
>                 -120 @ 100      -113
>                 -138 @ 1000     -128
>                 -143 @ 10k      -135
>                 -148 @ 100k     -140
>                 -150    floor
>
> max chg         1E-9 (-20 to 65) 5E-10  (-10 to 35)
>
> pwr             1.2W op         0.12
>                 1.8W warm       0.14
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