On 8/26/15 2:38 PM, Gerhard Hoffmann wrote:
Am 26.08.2015 um 22:04 schrieb Javier Herrero:
I suppose that one of the alternatives that you've explored are the
ABLNO from Abracon http://www.abracon.com/Precisiontiming/ABLNO.pdf
looks just like this one from Crystek:
< http://www.digikey.de/product-search/de?keywords=cvhd-950 >
Yep, that's one (and similar ones) that's my current "best I found in an
hour of googling"
but that fails the specs, also. If you have a good quality 5 or 10 MHz
source in your
system, you can lock the VCXO to it and clean it up close to the carrier.
Nope.. this oscillator is the ADC clock: it's a direct sampling receiver
to look at narrow band signals in the 3-30 MHz range.
Maybe Axtal has something.
I'll look..
They say that they are 3rd overtone, but it seems more an AT-cut than
a SC, and anyway is around 10dB poorer
SC requires high temperature, that does not go together well with SMD
and low power.
SC only requires high temperature if you want to operate close to the
turnover to minimize temperature effects.
I've got a GPS 1pps to count my oscillator, so the sampled data can be
post processed to take out the frequency variations. You'd get a bunch
of digital samples and the timestamps when the 1pps occurs.
I'm kind of hoping someone has run across a SMT OCXO where there's a
separate oscillator and oven power pin.
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