[time-nuts] More on SiLabs 5340

John Ackermann N8UR jra at febo.com
Mon Jan 29 23:16:49 UTC 2018


On 01/29/2018 04:54 PM, Chris Caudle wrote:
> On Mon, January 29, 2018 2:38 pm, John Ackermann N8UR wrote:
>> The close-in phase noise is quite amazing, but the floor is much worse
>> than in free-run mode.
> 
> That phase noise plot doesn't look quite right, what PLL bandwidth did you
> set?

Sorry for the earlier null reply.  I just used the settings that the 
ClockBuilder software came up with (which IIRC don't offer any choices 
about loop bandwidth in the "wizard").  I haven't yet dug into the 
register options, but I'm sure that there are ways to optimize.

John



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