Empathy List Archives

JA

John Ackermann N8UR

Mon, Jan 29, 2018 12:23 AM

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

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

BK

Bob kb8tq

Mon, Jan 29, 2018 12:33 AM

Hi

It would be very interesting to see what happens if you sync it up to a 10 MHz input ….

Bob

On Jan 28, 2018, at 7:23 PM, John Ackermann N8UR jra@febo.com wrote:

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

<siLabs5340-test.png>_______________________________________________
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.

Hi It would be *very* interesting to see what happens if you sync it up to a 10 MHz input …. Bob > On Jan 28, 2018, at 7:23 PM, John Ackermann N8UR <jra@febo.com> wrote: > > 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 > > <siLabs5340-test.png>_______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there.

JH

Jerry Hancock

Mon, Jan 29, 2018 1:12 AM

John, what device did you use for the test?

Regards,

Jerry

Jerry Hancock
jerry@hanler.com
(415) 215-3779

On Jan 28, 2018, at 4:23 PM, John Ackermann N8UR jra@febo.com wrote:

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

<siLabs5340-test.png>_______________________________________________
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.

John, what device did you use for the test? Regards, Jerry Jerry Hancock jerry@hanler.com (415) 215-3779 > On Jan 28, 2018, at 4:23 PM, John Ackermann N8UR <jra@febo.com> wrote: > > 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 > > <siLabs5340-test.png>_______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there.

JA

John Ackermann N8UR

Mon, Jan 29, 2018 1:15 AM

The reference was a 5 MHz Wenzel ULN and the instrument was a Miles TimePod.

On Jan 28, 2018, 8:13 PM, at 8:13 PM, Jerry Hancock jerry@hanler.com wrote:

John, what device did you use for the test?

Regards,

Jerry

Jerry Hancock
jerry@hanler.com
(415) 215-3779

On Jan 28, 2018, at 4:23 PM, John Ackermann N8UR jra@febo.com

wrote:

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

<siLabs5340-test.png>_______________________________________________
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to

https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts

and follow the instructions there.

time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.

The reference was a 5 MHz Wenzel ULN and the instrument was a Miles TimePod. On Jan 28, 2018, 8:13 PM, at 8:13 PM, Jerry Hancock <jerry@hanler.com> wrote: >John, what device did you use for the test? > > >Regards, > >Jerry > > >Jerry Hancock >jerry@hanler.com >(415) 215-3779 > >> On Jan 28, 2018, at 4:23 PM, John Ackermann N8UR <jra@febo.com> >wrote: >> >> 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 >> >> <siLabs5340-test.png>_______________________________________________ >> time-nuts mailing list -- time-nuts@febo.com >> To unsubscribe, go to >https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> and follow the instructions there. > >_______________________________________________ >time-nuts mailing list -- time-nuts@febo.com >To unsubscribe, go to >https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >and follow the instructions there.

time-nuts@lists.febo.com

Si5340 synthesizer chip performance