[time-nuts] CSAC vs NAC1
kb8tq at n1k.org
Fri Apr 7 07:43:32 EDT 2017
If you set them both on the table, the CSAC’s I’ve seen are just slightly
smaller than the NAC’s. It’s not by much. I never bothered to see if the
mechanical specs on the parts reflected this or not.
> On Apr 6, 2017, at 10:41 PM, jimlux <jimlux at earthlink.net> wrote:
> On 4/6/17 5:11 PM, paul swed wrote:
>> Jim am I reading the casc power consumption correctly? .12 and .14 W.
>> Thats 10X lower.
>> Any idea on the $$
> CSAC in the several kilobuck range, NAC in the 10-20k range, I think.
> They're about the same size.. NAC is slightly smaller, I think.
>> 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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