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

[mpb45 at clanbaker.org]

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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