[time-nuts] Si5340 synthesizer chip performance
John Ackermann N8UR
jra at febo.com
Mon Jan 29 00:23:51 UTC 2018
I received the Si5340A evaluation board from Digikey on Friday and fired
it up yesterday. I used the SiLabs "ClockBuilder" software to configure
four outputs -- 10 MHz, 15 MHz, 29.999 999 9 MHz, and 144.2 MHz -- all
using the 45 MHz crystal that comes with the EVM. Attached is a phase
noise plot of the 10 MHz and 29.999 999 9 MHz signals. I would say this
isn't too bad! This performance is certainly sufficient for any of the
RF work I have in mind.
The ADEV was another matter -- about 1e-9 at 1 second, working its way
uphill from there. But what do you expect from a bare crystal?
John
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