[SI-LIST] Re: How to do crystal simulation
- From: 靖 李 <lijingdea@xxxxxxxxxxxx>
- To: si-list@xxxxxxxxxxxxx
- Date: Wed, 18 Jun 2008 21:40:05 +0800 (CST)
Hi David and Haixiao
Thank you!
I just got the crystal internal circuit. It's L. C. R in serial and
parallel with a C.
I will have a try in Hspice with a initialized capacitor or inductor.
The outside circuit is two capacitor( both of them is about 22ps) connected
crystal's output and input with a R(1Mohm) in parallel.
I don't have ADS tool. So I can't use it. If necessory I will release the
Hspice simulation script tomorrow night. Then you can see the electrical
circuit clearly.
I'm not sure whether it can run or not.
"Pommerenke, David" <davidjp@xxxxxxx> дµÀ£º
Li,
Your attached file was not delivered, but normally I just set initial
conditions on the capacitor or the inductor that is part of the XTAL model.
Dr. David Pommerenke
Missouri University of Science and Technology (MST), former name: UMR
118 EECH, 301 W. 16th Street, Rolla, MO 65409-0040
573 341 4531, cell: 573 308 2019
Did you add stimulus to start the spice simulation? For example, a
1ns pulse.
ADS has more choice on crystal simulation. Check the ADS help on
oscillators.
Regards,
Haixiao
-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx] On
Behalf Of ? ?
Sent: Tuesday, June 17, 2008 8:35 AM
To: si-list@xxxxxxxxxxxxx
Subject: [SI-LIST] How to do crystal simulation
Hi all,
I have a problem with crystal simulation. Please check the attached. I can't
get the crystal start to "shake". The frequency I want to get is 25MHz. I
didn't get the internal circuit for crystal. The Pspice model seems didn't
work. What shall I do?
---------------------------------
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