[time-nuts] CSAC vs NAC1
kb8tq at n1k.org
Thu Apr 6 21:27:21 EDT 2017
Yes the numbers are correct, the NAC pulls roughly 10X the power of a CSAC.
> On Apr 6, 2017, at 8:11 PM, paul swed <paulswedb at gmail.com> wrote:
> Jim am I reading the casc power consumption correctly? .12 and .14 W.
> Thats 10X lower.
> Any idea on the $$
> 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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