Low Jitter 20MHz oscillator

[[email protected]]

Jitter is a function of the phase noise profile.

Set your jitter spec., calculate your jitter from the phase noise

of your chosen oscillator.

Then you don't need to argue with anybody.

It's not difficult.

At what kind of offsets from the carrier should the phase noise
profile be measured, to give meaningful jitter characteristic ?

At least for measuring phase noise for oscillators for RF applications
(especially first LO), it is very hard to get meaningfully readings
within +/-1 kHz from carrier, even with high quality test equipment,
unless you use some deep crystal notch filters at the carrier
frequency.

 

[Jeroen Belleman]

Jitter is a function of the phase noise profile.
Set your jitter spec., calculate your jitter from the phase noise
of your chosen oscillator.
Then you don't need to argue with anybody.
It's not difficult.

Well, this begs the question: How do you do it?

Jeroen Belleman

 

[Spehro Pefhany]

Well, this begs the question: How do you do it?

Jeroen Belleman

Dear Sir:-

I must object in the strongest terms to the above use of "begs the
question".

http://en.wikipedia.org/wiki/Begging_the_question

 

[Jeroen Belleman]

Dear Sir:-

I must object in the strongest terms to the above use of "begs the
question".

http://en.wikipedia.org/wiki/Begging_the_question

Quite. Point taken. It prompts the question.

Jeroen Belleman

 

[[email protected]]

Or begs (for) the question, which is a common use.





--



John Larkin Highland Technology, Inc



jlarkin at highlandtechnology dot com

http://www.highlandtechnology.com



Precision electronic instrumentation

Picosecond-resolution Digital Delay and Pulse generators

Custom laser drivers and controllers

Photonics and fiberoptic TTL data links

VME thermocouple, LVDT, synchro acquisition and simulation

The concept is pretty straight forward;
take the single sided spectral noise power and
convert it total rms jitter.

Where’s it used, think about it for a second;
What is one of the primary concerns when you
apply a clk to any high performance digitizer?

What’s on the back end of any modern day acquisition system?

 

[Jeroen]

The concept is pretty straight forward;
take the single sided spectral noise power and
convert it total rms jitter.

That's not an answer! You'll have to come up with something a little
more explicit!

Jeroen Belleman