I'm wondering what the modern version of a fixed-frequency oscillator
module is.
I had used the Silicon Labs (now Skyworks) Si570 in the past which has a
great close-in noise footprint - but that requires I2C and some glue.
The Seiko distributor-programmable type of generic parts are
functionally ideal - comes preprogrammed and requires minimal
connections to function - but they have miserable close in noise
characteristics. I realize that "miserable" here is subjective of course.
The project at hand is a single frequency oscillator to serve as a LO in
a receiver. The noise profile I'm looking for would be in the range of
"better than the generic PLL type $5 oscillators" and "not as good as
the modern equivalent to the Si570 & similar." Absolutely non-critical
but the Seiko part in there now looks terrible starting to flatten out
at -40 dBc a Khz or so spaced.
This answer seemed (from my recollection) easy to find back in the early
2010s when I had messed with it last. Then Abercon had some decent
offerings - but that is a long time ago in Electronics Progress Time scale.
Appreciate any advice.
73/jeff/ac0c
alpha-charlie-zero-charlie
www.ac0c.com
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