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OPA2314 Generic Spice or Pspice Model Requested

Charlie Sweet
Prodigy 140 points
Other Parts Discussed in Thread: OPA2314, OPA2376, OPA2134, TINA-TI, OPA314

Hi Folks,

I am using LTSpice (believe I can't use TINA with non-TI active parts) and can't get released (TINA) OPA2314 model to even find operating point as part of larger circuit (12 amplifiers in a dual differential bandpass configuration).  

Can you provide me with a representative model for a standard spice simulator or for PSpice for this part? 

BTW, OPA2376 in same circuit ran ok (Pspice version) with LTSpice.

Any suggestions appreciated.

Thanks,

Charlie

  • 0
    Expert 1220 points

    If you have the Linear Tech model, or any model really, you should be able to ENTER MACRO in TINA and copy paste over the existing TI model.

    As for LTSpice and practically any simulator, you should be able to play with the GMIN and perhaps the integration method to help with convergence.

    -Ken.

  • 0 in reply to Ken Dillinger
    Prodigy 140 points

    Hi Ken,

    I have tried playing with GMIN and integration method (among other Spice convergence knobs) but I get a warning that indicates that subcircuits within your model are not working properly (or at least not consistent with LTspice).

    Do you have any generic spice models for OPA2314 or a method to generate a generic spice model for the OPA2314?

    Thanks,

    Charlie

  • 0 in reply to Charlie Sweet
    Expert 1220 points

    Unfortunately, I do not have a SPICE model for the OPA2314. The only model available would be from TI and since TI works with DesignSoft that is the only model (TINA) available, generally speaking.  Have you tried the "Alternate" solver?

    Also, is the problem only noticeable when it is a large circuit, or are you having trouble with the OPA2134 by itself, say as a simple buffer for example?

    Another possibility is to use a .WAV file as an input source. You can break up your circuit in two parts. You can export the data from the first block as a .WAV file and then use that as an input to the second block.

    Maybe not an optimal solution, but it may work. 

    -Ken

  • 0 in reply to Charlie Sweet
    TI__Guru 60610 points

    Charlie,

    Even though Tina-TI is meant to be Pspice compatible, at times there are some syntax differences between the two files causing simulation errors.  In the case like this, you can always open the Tina-TI schematic available on TI website and re-netlist the model by going to: File>Export<Netlist>PSpice - this generates the .CIR Pspice compatible file you may copy/paste into LTspice simulator.  For your convenience, I have attached OPA314.CIR re-generated file in this post.

    OPA314.CIR