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TINA/Spice/OPA2141: Trouble with OPA2141 in LTSpice

Tim Burke77
Prodigy 20 points
Part Number: OPA2141
Other Parts Discussed in Thread: TINA-TI, , OPA141, OPA1611

Tool/software: TINA-TI or Spice Models

I am trying to use the OPA2141 model in a simulation.  I built a symbol and matched the setlist order.  I cannot get my basic test bench to simulate.  U2 is the OPA2141 model.  I attached a small picture of a test circuit I use to evaluate models and error log.

Circuit: * /Volumes/Samsung USB/Music Research Labs/Simulations/Test Benches/OPA2141/OPA2141 Test Bench.asc

u2:vccvs1_in: Missing value, assumed 0V @ DC

Per .tran options, skipping operating point for transient analysis.

Changing Tseed to 1e-08

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Changing Tseed to 0.0001

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Changing Tseed to 1e-15

Heightened Def Con from 0 Changing Tseed to 1e-09

Changing Tseed to 1e-11

Changing Tseed to 1e-08

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Changing Tseed to 1e-14

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Changing Tseed to 1e-15

Changing Tseed to 0.0001

Changing Tseed to 1e-16

+Changing Tseed to 1e-09

Changing Tseed to 1e-11

Changing Tseed to 1e-08

Changing Tseed to 1e-12

Changing Tseed to 1e-07

Changing Tseed to 1e-13

Changing Tseed to 1e-06

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Changing Tseed to 1e-15

Changing Tseed to 0.0001

Changing Tseed to 1e-16

+Changing Tseed to 1e-09

Changing Tseed to 1e-11

Changing Tseed to 1e-08

Changing Tseed to 1e-12

Changing Tseed to 1e-07

Changing Tseed to 1e-13

Changing Tseed to 1e-06

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Changing Tseed to 1e-15

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Changing Tseed to 1e-16

+Changing Tseed to 1e-09

Changing Tseed to 1e-11

Changing Tseed to 1e-08

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Changing Tseed to 1e-07

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Changing Tseed to 1e-06

Changing Tseed to 1e-14

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Changing Tseed to 1e-15

Changing Tseed to 0.0001

Changing Tseed to 1e-16

+Changing Tseed to 1e-09

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Changing Tseed to 1e-08

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Changing Tseed to 1e-13

Changing Tseed to 1e-06

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Changing Tseed to 0.0001

Changing Tseed to 1e-16

+Changing Tseed to 1e-09

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Changing Tseed to 0.0001

Changing Tseed to 1e-16

+Changing Tseed to 1e-09

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Changing Tseed to 1e-07

Changing Tseed to 1e-13

Changing Tseed to 1e-06

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Changing Tseed to 1e-05

Changing Tseed to 1e-15

Changing Tseed to 0.0001

Changing Tseed to 1e-16

+Changing Tseed to 1e-09

Changing Tseed to 1e-11

Changing Tseed to 1e-08

Changing Tseed to 1e-12

Changing Tseed to 1e-07

Changing Tseed to 1e-13

Changing Tseed to 1e-06

Changing Tseed to 1e-14

Changing Tseed to 1e-05

Changing Tseed to 1e-15

Changing Tseed to 0.0001

Changing Tseed to 1e-16

+Changing Tseed to 1e-09

Changing Tseed to 1e-11

Changing Tseed to 1e-08

Changing Tseed to 1e-12

Changing Tseed to 1e-07

Changing Tseed to 1e-13

Changing Tseed to 1e-06

Changing Tseed to 1e-14

Changing Tseed to 1e-05

Changing Tseed to 1e-15

Changing Tseed to 0.0001

Changing Tseed to 1e-16

+Changing Tseed to 1e-09

Changing Tseed to 1e-11

Changing Tseed to 1e-08

Changing Tseed to 1e-12

Changing Tseed to 1e-07

Changing Tseed to 1e-13

Changing Tseed to 1e-06

Changing Tseed to 1e-14

Changing Tseed to 1e-05

Changing Tseed to 1e-15

Changing Tseed to 0.0001

Changing Tseed to 1e-16

+Changing Tseed to 1e-09

Changing Tseed to 1e-11

Changing Tseed to 1e-08

Changing Tseed to 1e-12

Changing Tseed to 1e-07

Changing Tseed to 1e-13

Changing Tseed to 1e-06

Changing Tseed to 1e-14

Changing Tseed to 1e-05

Changing Tseed to 1e-15

Changing Tseed to 0.0001

Changing Tseed to 1e-16

+Changing Tseed to 1e-09

Changing Tseed to 1e-11

Changing Tseed to 1e-08

Changing Tseed to 1e-12

Changing Tseed to 1e-07

Changing Tseed to 1e-13

Changing Tseed to 1e-06

Changing Tseed to 1e-14

Changing Tseed to 1e-05

Changing Tseed to 1e-15

Changing Tseed to 0.0001

Changing Tseed to 1e-16

+Changing Tseed to 1e-09

Changing Tseed to 1e-11

Changing Tseed to 1e-08

Changing Tseed to 1e-12

Changing Tseed to 1e-07

Changing Tseed to 1e-13

Changing Tseed to 1e-06

Changing Tseed to 1e-14

Changing Tseed to 1e-05

Changing Tseed to 1e-15

Changing Tseed to 0.0001

Changing Tseed to 1e-16

+Changing Tseed to 1e-09

Changing Tseed to 1e-11

Changing Tseed to 1e-08

Changing Tseed to 1e-12

Changing Tseed to 1e-07

Changing Tseed to 1e-13

Changing Tseed to 1e-06

Changing Tseed to 1e-14

Changing Tseed to 1e-05

Changing Tseed to 1e-15

Changing Tseed to 0.0001

Changing Tseed to 1e-16

+Changing Tseed to 1e-09

Changing Tseed to 1e-11

Changing Tseed to 1e-08

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Changing Tseed to 1e-06

Changing Tseed to 1e-14

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Changing Tseed to 0.0001

Changing Tseed to 1e-16

+Changing Tseed to 1e-09

Changing Tseed to 1e-11

Changing Tseed to 1e-08

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Changing Tseed to 1e-07

Changing Tseed to 1e-13

Changing Tseed to 1e-06

Changing Tseed to 1e-14

Changing Tseed to 1e-05

Changing Tseed to 1e-15

Changing Tseed to 0.0001

Changing Tseed to 1e-16

+Changing Tseed to 1e-09

Changing Tseed to 1e-11

Changing Tseed to 1e-08

Changing Tseed to 1e-12

Changing Tseed to 1e-07

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Changing Tseed to 1e-06

Changing Tseed to 1e-14

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Changing Tseed to 1e-15

Changing Tseed to 0.0001

Changing Tseed to 1e-16

+Changing Tseed to 1e-09

Changing Tseed to 1e-11

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Changing Tseed to 1e-06

Changing Tseed to 1e-14

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Changing Tseed to 1e-15

Changing Tseed to 0.0001

Changing Tseed to 1e-16

+Changing Tseed to 1e-09

Changing Tseed to 1e-11

Changing Tseed to 1e-08

Changing Tseed to 1e-12

Changing Tseed to 1e-07

Changing Tseed to 1e-13

Changing Tseed to 1e-06

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Changing Tseed to 1e-05

Changing Tseed to 1e-15

Changing Tseed to 0.0001

Changing Tseed to 1e-16

+Changing Tseed to 1e-09

Changing Tseed to 1e-11

Changing Tseed to 1e-08

Changing Tseed to 1e-12

Changing Tseed to 1e-07

Changing Tseed to 1e-13

Changing Tseed to 1e-06

Changing Tseed to 1e-14

Changing Tseed to 1e-05

Changing Tseed to 1e-15

Changing Tseed to 0.0001

Changing Tseed to 1e-16

+Changing Tseed to 1e-09

Changing Tseed to 1e-11

Changing Tseed to 1e-08

Changing Tseed to 1e-12

Changing Tseed to 1e-07

Changing Tseed to 1e-13

Changing Tseed to 1e-06

Changing Tseed to 1e-14

Changing Tseed to 1e-05

Changing Tseed to 1e-15

Changing Tseed to 0.0001

Changing Tseed to 1e-16

+Changing Tseed to 1e-09

Changing Tseed to 1e-11

Changing Tseed to 1e-08

Changing Tseed to 1e-12

Changing Tseed to 1e-07

Changing Tseed to 1e-13

Changing Tseed to 1e-06

Changing Tseed to 1e-14

Changing Tseed to 1e-05

Changing Tseed to 1e-15

Changing Tseed to 0.0001

Changing Tseed to 1e-16

+Changing Tseed to 1e-09

Changing Tseed to 1e-11

Changing Tseed to 1e-08

Changing Tseed to 1e-12

Changing Tseed to 1e-07

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Changing Tseed to 1e-06

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Changing Tseed to 0.0001

Changing Tseed to 1e-16

+Changing Tseed to 1e-09

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Changing Tseed to 1e-08

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Changing Tseed to 1e-07

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Changing Tseed to 1e-06

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Changing Tseed to 0.0001

Changing Tseed to 1e-16

+Changing Tseed to 1e-09

Changing Tseed to 1e-11

Changing Tseed to 1e-08

Changing Tseed to 1e-12

Changing Tseed to 1e-07

Changing Tseed to 1e-13

Changing Tseed to 1e-06

Changing Tseed to 1e-14

Changing Tseed to 1e-05

Changing Tseed to 1e-15

Changing Tseed to 0.0001

Changing Tseed to 1e-16

+Changing Tseed to 1e-09

Changing Tseed to 1e-11

Changing Tseed to 1e-08

Changing Tseed to 1e-12

Changing Tseed to 1e-07

Changing Tseed to 1e-13

Changing Tseed to 1e-06

Changing Tseed to 1e-14

Changing Tseed to 1e-05

Changing Tseed to 1e-15

Changing Tseed to 0.0001

Changing Tseed to 1e-16

+Changing Tseed to 1e-09

Changing Tseed to 1e-11

Changing Tseed to 1e-08

Changing Tseed to 1e-12

Changing Tseed to 1e-07

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Changing Tseed to 1e-06

Changing Tseed to 1e-14

Changing Tseed to 1e-05

Changing Tseed to 1e-15

Changing Tseed to 0.0001

Changing Tseed to 1e-16

+Changing Tseed to 1e-09

Changing Tseed to 1e-11

Changing Tseed to 1e-08

Changing Tseed to 1e-12

Changing Tseed to 1e-07

Changing Tseed to 1e-13

Changing Tseed to 1e-06

Changing Tseed to 1e-14

Changing Tseed to 1e-05

Changing Tseed to 1e-15

Changing Tseed to 0.0001

Changing Tseed to 1e-16

+Changing Tseed to 1e-09

Changing Tseed to 1e-11

Changing Tseed to 1e-08

Changing Tseed to 1e-12

Changing Tseed to 1e-07

Changing Tseed to 1e-13

Changing Tseed to 1e-06

Changing Tseed to 1e-14

Changing Tseed to 1e-05

Changing Tseed to 1e-15

Changing Tseed to 0.0001

Changing Tseed to 1e-16

+Changing Tseed to 1e-09

Changing Tseed to 1e-11

Changing Tseed to 1e-08

Changing Tseed to 1e-12

Changing Tseed to 1e-07

Changing Tseed to 1e-13

Changing Tseed to 1e-06

Changing Tseed to 1e-14

Changing Tseed to 1e-05

Changing Tseed to 1e-15

Changing Tseed to 0.0001

Changing Tseed to 1e-16

+Changing Tseed to 1e-09

Changing Tseed to 1e-11

Changing Tseed to 1e-08

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Changing Tseed to 1e-07

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Changing Tseed to 1e-05

Changing Tseed to 1e-15

Changing Tseed to 0.0001

Changing Tseed to 1e-16

+Changing Tseed to 1e-09

Changing Tseed to 1e-11

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Changing Tseed to 1e-07

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Changing Tseed to 0.0001

Changing Tseed to 1e-16

+Changing Tseed to 1e-09

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Changing Tseed to 1e-07

Changing Tseed to 1e-13

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Changing Tseed to 1e-05

Changing Tseed to 1e-15

Changing Tseed to 0.0001

Changing Tseed to 1e-16

+Changing Tseed to 1e-09

Changing Tseed to 1e-11

Changing Tseed to 1e-08

Changing Tseed to 1e-12

Changing Tseed to 1e-07

Changing Tseed to 1e-13

Changing Tseed to 1e-06

Changing Tseed to 1e-14

Changing Tseed to 1e-05

Changing Tseed to 1e-15

Changing Tseed to 0.0001

Changing Tseed to 1e-16

+Changing Tseed to 1e-09

Changing Tseed to 1e-11

Changing Tseed to 1e-08

Changing Tseed to 1e-12

Changing Tseed to 1e-07

Changing Tseed to 1e-13

Changing Tseed to 1e-06

Changing Tseed to 1e-14

Changing Tseed to 1e-05

Changing Tseed to 1e-15

Changing Tseed to 0.0001

Changing Tseed to 1e-16

+Changing Tseed to 1e-09

Changing Tseed to 1e-11

Changing Tseed to 1e-08

Changing Tseed to 1e-12

Changing Tseed to 1e-07

Changing Tseed to 1e-13

Changing Tseed to 1e-06

Changing Tseed to 1e-14

Changing Tseed to 1e-05

Changing Tseed to 1e-15

Changing Tseed to 0.0001

Changing Tseed to 1e-16

+Changing Tseed to 1e-09

Changing Tseed to 1e-11

Changing Tseed to 1e-08

Changing Tseed to 1e-12

Changing Tseed to 1e-07

Changing Tseed to 1e-13

Changing Tseed to 1e-06

Changing Tseed to 1e-14

Changing Tseed to 1e-05

Changing Tseed to 1e-15

Changing Tseed to 0.0001

Changing Tseed to 1e-16

+Changing Tseed to 1e-09

Changing Tseed to 1e-11

Changing Tseed to 1e-08

Changing Tseed to 1e-12

Changing Tseed to 1e-07

Changing Tseed to 1e-13

Changing Tseed to 1e-06

Changing Tseed to 1e-14

Changing Tseed to 1e-05

Changing Tseed to 1e-15

Changing Tseed to 0.0001

Changing Tseed to 1e-16

+Changing Tseed to 1e-09

Changing Tseed to 1e-11

Changing Tseed to 1e-08

Changing Tseed to 1e-12

Changing Tseed to 1e-07

Changing Tseed to 1e-13

Changing Tseed to 1e-06

Changing Tseed to 1e-14

Changing Tseed to 1e-05

Changing Tseed to 1e-15

Changing Tseed to 0.0001

Changing Tseed to 1e-16

+Changing Tseed to 1e-09

Changing Tseed to 1e-11

Changing Tseed to 1e-08

Changing Tseed to 1e-12

Changing Tseed to 1e-07

Changing Tseed to 1e-13

Changing Tseed to 1e-06

Changing Tseed to 1e-14

Changing Tseed to 1e-05

Changing Tseed to 1e-15

Changing Tseed to 0.0001

Changing Tseed to 1e-16

+Changing Tseed to 1e-09

Changing Tseed to 1e-11

Changing Tseed to 1e-08

Changing Tseed to 1e-12

Changing Tseed to 1e-07

Changing Tseed to 1e-13

Changing Tseed to 1e-06

Changing Tseed to 1e-14

Changing Tseed to 1e-05

Changing Tseed to 1e-15

Changing Tseed to 0.0001

Changing Tseed to 1e-16

+Changing Tseed to 1e-09

Changing Tseed to 1e-11

Changing Tseed to 1e-08

Changing Tseed to 1e-12

Changing Tseed to 1e-07

Changing Tseed to 1e-13

Changing Tseed to 1e-06

Changing Tseed to 1e-14

Changing Tseed to 1e-05

Changing Tseed to 1e-15

Changing Tseed to 0.0001

Changing Tseed to 1e-16

+Changing Tseed to 1e-09

Changing Tseed to 1e-11

Changing Tseed to 1e-08

Changing Tseed to 1e-12

Changing Tseed to 1e-07

Changing Tseed to 1e-13

Changing Tseed to 1e-06

Changing Tseed to 1e-14

Changing Tseed to 1e-05

Changing Tseed to 1e-15

Changing Tseed to 0.0001

Changing Tseed to 1e-16

+Changing Tseed to 1e-09

Changing Tseed to 1e-11

Changing Tseed to 1e-08

Changing Tseed to 1e-12

Changing Tseed to 1e-07

Changing Tseed to 1e-13

Changing Tseed to 1e-06

Changing Tseed to 1e-14

Changing Tseed to 1e-05

Changing Tseed to 1e-15

Changing Tseed to 0.0001

Changing Tseed to 1e-16

+Changing Tseed to 1e-09

Changing Tseed to 1e-11

Changing Tseed to 1e-08

Changing Tseed to 1e-12

Changing Tseed to 1e-07

Changing Tseed to 1e-13

Changing Tseed to 1e-06

Changing Tseed to 1e-14

Changing Tseed to 1e-05

Changing Tseed to 1e-15

Changing Tseed to 0.0001

Changing Tseed to 1e-16

+Changing Tseed to 1e-09

Changing Tseed to 1e-11

Changing Tseed to 1e-08

Changing Tseed to 1e-12

Changing Tseed to 1e-07

Changing Tseed to 1e-13

Changing Tseed to 1e-06

Changing Tseed to 1e-14

Changing Tseed to 1e-05

Changing Tseed to 1e-15

Changing Tseed to 0.0001

Changing Tseed to 1e-16

+Changing Tseed to 1e-09

Changing Tseed to 1e-11

Changing Tseed to 1e-08

Changing Tseed to 1e-12

Changing Tseed to 1e-07

Changing Tseed to 1e-13

Changing Tseed to 1e-06

Changing Tseed to 1e-14

Changing Tseed to 1e-05

Changing Tseed to 1e-15

Changing Tseed to 0.0001

Changing Tseed to 1e-16

+Changing Tseed to 1e-09

Changing Tseed to 1e-11

Changing Tseed to 1e-08

Changing Tseed to 1e-12

Changing Tseed to 1e-07

Changing Tseed to 1e-13

Changing Tseed to 1e-06

Changing Tseed to 1e-14

Changing Tseed to 1e-05

Changing Tseed to 1e-15

Changing Tseed to 0.0001

Changing Tseed to 1e-16

+Changing Tseed to 1e-09

Changing Tseed to 1e-11

Changing Tseed to 1e-08

Changing Tseed to 1e-12

Changing Tseed to 1e-07

Changing Tseed to 1e-13

Changing Tseed to 1e-06

Changing Tseed to 1e-14

Changing Tseed to 1e-05

Changing Tseed to 1e-15

Changing Tseed to 0.0001

Changing Tseed to 1e-16

+Changing Tseed to 1e-09

Changing Tseed to 1e-11

Changing Tseed to 1e-08

Changing Tseed to 1e-12

Changing Tseed to 1e-07

Changing Tseed to 1e-13

Changing Tseed to 1e-06

Changing Tseed to 1e-14

Changing Tseed to 1e-05

Changing Tseed to 1e-15

Changing Tseed to 0.0001

Changing Tseed to 1e-16

+Changing Tseed to 1e-09

Changing Tseed to 1e-11

Changing Tseed to 1e-08

Changing Tseed to 1e-12

Changing Tseed to 1e-07

Changing Tseed to 1e-13

Changing Tseed to 1e-06

Changing Tseed to 1e-14

Changing Tseed to 1e-05

Changing Tseed to 1e-15

Changing Tseed to 0.0001

Changing Tseed to 1e-16

Fatal Error: Analysis:  Time step too small; initial timepoint: trouble with node "u2:33"

  • 0
    TI__Mastermind 29035 points
    Hi Tim,

    The model we release should work with the testbenches found in the same product folder. Your problem seems to be caused by the simulator or your simulation setups. We cannot support LTSpice or debug it further.

    If possible, please try simulating the model in either TINA-TI or PSpice. We'll be happy to investigate further should you run into issues with those tools.

    Thanks,
    JC
  • 0 in reply to JC Zhu
    Prodigy 20 points

    Hey JC,

    Thanks for your response, I hear you, and understand what you are saying.  However a SPICE model is a SPICE model, the underlying simulation engine is the same.  Other models from TI (such as the newly release OPA1611) run just fine in the same simulation with the same settings.  I can run other simulations, including simpler 1st order small signal models, in the same file that fails with the OPA2141. I know a lot of older TI linear models have issues running in all SPICE based simulators, and that you guys have been working to update models for the linear products to use newer more accurate modeling methods, though the OPA2141 is (or OPA141) is absent from the list I was provided earlier.

    I have been wanting to try TINA, though not so much the more limited TI version, so maybe I will give it a shot when I get some time, but right now, I really need to focus on my design, not instilling and learning new simulation tools.  Would be interesting to hear if it actually simulates in PSPICE, the model seems to have fundamental issues with convergence, which is a common problem with older TI models.  Do you test the models in PSPICE?

  • 0 in reply to Tim Burke77
    TI__Mastermind 29035 points

    Hi Tim,

    Yes we test our models in PSpice and TINA extensively.

    I added your schematic to the PSpice project downloaded from the web and added a simulation profile. It is attached here.OPA2141_PSPICE_AIO.zip

    Thanks,

    JC