[time-nuts] VCXO help
EWKehren at aol.com
EWKehren at aol.com
Fri Feb 25 14:52:08 UTC 2011
Thanks for the input, do not forget the total system cost has to be $200,
the latest version has a simple VCO but I would like to eliminate component
selection, may stay with the present design, but the Cirrus CS 2300
followed by a bubbler may be the answer. Maybe there is something like the 2300
out there that goes to 100 MHz in a package that normal time-nuts (if there
is such a thing) can solder.
Bert
In a message dated 2/25/2011 9:33:43 A.M. Eastern Standard Time,
jimlux at earthlink.net writes:
On 2/25/11 3:05 AM, EWKehren at aol.com wrote:
> As part of the D/M project the counter uses a 100 MHz VCO with an AD 4001
> PLL. To simplify further I would like to consider a very simple VCXO,
easily
> available components, no tuning, any ideas out there. For once phase
noise
> is of no concern.
> Bert Kehren
>
no tuning, but you *do* need some adjustment range, right (it needs a
voltage control port?)
what about one of the TCXOs out there that has the "resistor trim" for
frequency?
Just randomly.. A Vectron TX400 has a +/-12 ppm tuning range on the EFC
input.. that's about 1200 Hz...
http://www.vectron.com/products/tcxo/tx-400.pdf
Digikey shows a whole bunch of Crystek VCOs for around $20-30
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