• State Resolved
  • Locked Locked
  • Replies 6 replies
  • Subscribers 39 subscribers
  • Views 1633 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

Simulation Model , IBIS file for SN65HVS881, LM3S1N16 and ISO7231 and ISO7241

Elham Isari
Prodigy 20 points
Other Parts Discussed in Thread: SN65HVS881, ISO7231C, ISO7241C, SN65HVS882

Dear all,

I want to simulate my schematic in Altium Designer .

My design includes the following components : SN65HVS881, LM3S1N16 and ISO7231C and ISO7241C

 

Would you please give me the appropriate model for them?

 

Best regards

Elham

  • 0
    TI__Mastermind 40295 points

    Elham,

    I am a modeling engineer in the Analog eLab group.

    The models of the LM3S1N16 and ISO7241C are uploaded as *.zip files.

    The  LM3S1N16 model is part of the larger IBIS library that is available for download at the eLab page:
    http://focus.ti.com/adc/docs/midlevel.tsp?contentId=23670

    The model for the ISO7241 is in the IBIS library as well, and is also available on the device product page:
    http://focus.ti.com/docs/prod/folders/print/iso7241c.html#toolssoftware

    The models for the SN65HVS881 and ISO7231C don't seem to be available.

    I will look into how long it will take to generate the missing models and will let you know when they will be available.

    Regards,

    John Miller

    5023.lm3s1n16.zip

     1222.iso7241.zip

  • 0 in reply to John Miller - Sensing
    Prodigy 20 points

    Dear John Miller


    Thank you for your kindly reply,


    It was so useful for me, I designed my Altium library and added these ibis models, it has no error and successfully done!

    Would you please check the other missing parts and let me know the time they are ready??


    Thanks alot

    Best regards

    Elham




  • 0 in reply to Elham Isari
    TI__Mastermind 40295 points

    Elham,

    The two remaining models can be covered by models of other devices in the same product family.

    The sn65hvs882 model can be used as the model for the sn65hvs881.
    The iso7241 model can be used for the iso7231. The two models have been uploaded to this page.

    One of my colleagues has also made available some revised models for the iso7231/41. The models still need to go through validation so they may change before they are posted on the web. I can send the models to you via email if you are interested.

    Regards,
    John

     

    1680.iso7241.zip
    8551.sn65hvs882.zip

  • 0 in reply to John Miller - Sensing
    Intellectual 700 points

    I am trying to do some simulation using the 7241C using the models on this forum but the simulation does not run properly, the signal is always stuck low or stuck high.

    Any help would be appreciated.

    I am using Hyperlinx 9.3

  • 0 in reply to Lenny
    TI__Mastermind 20460 points

    Lenny,

    The OUTPUT is a 3-state. When instantiated in Hyperlynx, the default setting is Hi-Z. You need to change that to Output or Output Inverted.

    Don't ask me why the default in Hyperlynx is high-Z. Just the way they do things.

    David

    Webench Design Center

  • 0 in reply to David Larkin
    Intellectual 700 points

    I did that but I am still having issue, I had mentor look at the ibis file and they found a lot of errors, here is what I got out of them:

    The two falling edges and the two rising edges have to be moved by

    the same amount.  Note that the first time of these are around 59 ns

    and 107 ns.  These tables should start at 0.

    But I suspect some other serious problems with the waveforms.  Note

    that the V_fixture values are most likely in the wrong order:

    V_fixture = 5.0

    V_fixture_min = 5.5

    V_fixture_max = 4.5

    The min value should be 4.5 and the max value should be 5.5.  I

    suspect the same problem with [Voltage Range]:

    [Voltage range]         5.0V            5.5V            4.5V

    And also with the [Temperature] keyword, unless this is a bi-polar

    (not CMOS) device:

    [Temperature Range]     25.0            -40             125

    The reason I noticed this is because I see an obvious clipping

    effect in the waveforms for the min case at 5.25 V:

    If V_fixture_min=5.5, the waveform would usually go to 5.5 V, but

    here it is clearly clipped to 5.25 V…