Can anyone give me a 12MHz crystal simulation model?

[holddreams]

I want to design a 12MHz crsytal circuit,
and I need the simulation model(R,L,C,C0),
can someone give me ?

Thanks.

 

[E-design]

Here's data for a 11MHz crystal that should give you starting figures to work with

LS = 0.02
CS = 1E-14
RS = 45
CO = 4E-12

Remember crystal circuits may take very long to start up in simulations due to the high loaded Q

 

[holddreams]

Here's data for a 11MHz crystal that should give you starting figures to work with

LS = 0.02
CS = 1E-14
RS = 45
CO = 4E-12

Remember crystal circuits may take very long to start up in simulations due to the high loaded Q

Thanks.
Can you tell me where you get this model?
And how can I figure it out for 12MHz?

 

[E-design]

This data comes from a model in Multisim. Look at this post for information I posted on crystal models

 

[holddreams]

This data comes from a model in Multisim. Look at this post for information I posted on crystal models

I have the same question of the previous author.
Is the model I used be accurate as on the market crsytal?
And only using those equations to get the parameter R,L,C,C0?

THX.

 

[E-design]

It depends what you mean by accurate. Most crystals needs to be trimmed individually in a circuit by external components (phase lead or phase lag to get the frequency within a few Hz of the desired frequency), even if you use crystals from the same batch. Without trimming you can expect ± 2kHz error at 11MHz. Also long term accuracy and drift will depend on type of cut, temperature and crystal dissipation from amount of drive current through RS.