[time-nuts] Interesting 1-60 MHz =/- 50 ppb Stratum-3 TCXO chip

[Bill Notfaded]

Looking at the datasheet it doesn't look like you'd win any ADEV
competitions with it but it's small and the DCTXCO version would be nice to
use the I2C interface and it says frequency control resolution as low as 5
ppt.  It has uses I can see.

Bill

On Fri, May 1, 2020, 5:50 PM Richard Solomon <dickw1ksz at gmail.com> wrote:

> Been there, did a search on the part number and came up empty.
>
> They did have a "Request Samples" button so I filled out the form. Let's
> see what happens.
>
> 73, Dick, W1KSZ
>
> On Fri, May 1, 2020, 5:40 PM jimlux <jimlux at earthlink.net> wrote:
>
> > On 5/1/20 5:00 PM, Richard Solomon wrote:
> > > Where do you buy these ? Their web site was not too illuminating.
> > >
> >
> >
> > digikey and mouser carry a lot of SiTime parts, including eval boards.
> >
> >
> > > Tnx, Dick, W1KSZ
> > >
> > > On Fri, May 1, 2020, 4:31 PM mpb45 at clanbaker.org <mpb45 at clanbaker.org>
> > > wrote:
> > >
> > >> Hello, time Nutters--
> > >>
> > >> I have been phase locking the freq counters in my HP 6-GHz VNA,
> > Tektronix
> > >> spectrum analyzer and bench freq counter to the 10 MHz signal from
> > >> a Trimble Thunderbolt via a 4-port distribution box and long coax
> cables
> > >> to each of the instruments.  This works well but is a pain in the tush
> > >> connecting to long coax cables when the bench test gear are moved
> > around.
> > >>
> > >> A friend suggested looking into some MEMS TCXO's made by SiTime to
> > >> do this with.   SiTime offers a wide variety of Stratum-3 TCXO chips.
> > One
> > >> of them is the SiT5358 which is spec'd at 0.05 ppm from 1 to 60 MHz.
> > >>
> > >> https://www.sitime.com/products/super-tcxos/sit5358
> > >>
> > >> I am wondering what any feedback thoughts might be on this from
> > >> the Time-Nuts gang?  An eval-PCB board for the SiT5358 chip is
> > >> available.  What say the Time-Nutters gang about this approach for
> > >> incorporating a small SiT5358 eval-PCB board into my bench test
> > >> gear for phase locking to?  I am also wondering which of the
> > >> SuperStratum3 TCXO chips might be the best choice for a project
> > >> like this?
> > >>
> > >> Any feedback on this is most welcome!
> > >>
> > >> Mike Baker
> > >> Gainesville/Micanopy, Florida
> > >> *****************
> > >>
> > >>
> > >>
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