[time-nuts] New PPB rated TCXO
djl at montana.com
Tue Oct 11 02:27:43 EDT 2016
But how the heck did they get some? According to the website, even data
sheets are not available.
On 2016-10-10 21:32, Henry Hallam wrote:
> I can attest that that oscillator was a lifesaver recently in a
> project I was tangentially involved with. They had tried several
> TCXOs and were plagued with thermal and vibration sensitivity. They
> dropped in the SiTime and it worked like a charm.
> On Mon, Oct 10, 2016 at 7:02 PM, Nick Sayer via time-nuts
> <time-nuts at febo.com> wrote:
>> The video linked on that page is particularly interesting (if you take
>> it on face value that they're not faking it. ;) ).
>> Sent from my iPhone
>>> On Oct 10, 2016, at 8:03 AM, Robert LaJeunesse <lajeunesse at mail.com>
>>> For general group information, as SiTime datasheet is not open to the
>>> public (yet?).
>>> Actually a MEMS oscillator, comparison video against quartz TCXO is
>>> Claimed Key Features:
>>> - 30x better dynamic performance for macro cells, small cells, syncE
>>> and optical networks
>>> - 3e-11 Allan Deviation (ADEV)
>>> - 0.2 ps/mv PSNR, eliminating dedicated LDO
>>> - No activity dips or microjumps
>>> - 10x better dynamic stability, replacing OCXOs in IEEE 1588
>>> - 1 to 5 ppb/°C frequency over temperature slope
>>> - -40°C to +105°C operation uniquely enables fan-less outdoor
>>> - 20x greater vibration resistance ensures continuous system
>>> Frequency range 1MHz to 220MHz (via 2 product types) so some form of
>>> synthesizer/divider is inherent.
>>> Bob L.
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Dr. Don Latham
PO Box 404, Frenchtown, MT, 59834
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