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OPA657 spice model

Otger Ballester
Prodigy 10 points
Other Parts Discussed in Thread: OPA657

Hi everybody,

I'm using an OPA657 for a transimpedance amplifier. I would like to simulate my system using PSpice, but I get an error. I've tried to simulate it with other operational models and it works, so I guess that the problem comes from OPA657 model.

The error I get:

ERROR -- Subcircuit OPA657schm_F7 used by X_U1.X_F7 is undefined
ERROR -- Subcircuit OPA657schm_F8 used by X_U1.X_F8 is undefined
ERROR -- Subcircuit OPA657schm_F10 used by X_U1.X_F10 is undefined
ERROR -- Subcircuit OPA657schm_F9 used by X_U1.X_F9 is undefined
ERROR -- Subcircuit OPA657schm_F1 used by X_U1.X_F1 is undefined

 

Any idea of how I could solve this issue?

 

Thanks in advance!

  • 0
    TI__Expert 4950 points

    Hello Otger,

    During the association with the symbol, Pspice tends to cut the model from the following function.

    .subckt OPA657schm_F7 1 2 3 4 
    F_F7         3 4 VF_F7 1.00165517241
    VF_F7         1 2 0V
    .ends OPA657schm_F7

    .subckt OPA657schm_F8 1 2 3 4 
    F_F8         3 4 VF_F8 1.00165517241
    VF_F8         1 2 0V
    .ends OPA657schm_F8

    .subckt OPA657schm_F10 1 2 3 4 
    F_F10         3 4 VF_F10 1.33600996816
    VF_F10         1 2 0V
    .ends OPA657schm_F10

    .subckt OPA657schm_F9 1 2 3 4 
    F_F9         3 4 VF_F9 1.33600996816
    VF_F9         1 2 0V
    .ends OPA657schm_F9

    .subckt OPA657schm_F1 1 2 3 4 
    F_F1         3 4 VF_F1 4
    VF_F1         1 2 0V
    .ends OPA657schm_F1

     

    Just adding them back in the model should make the circuit operate normally.