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Tool/software: TINA-TI or Spice Models
Hi,
By doing Transient Analysis with "OPA376_sboc261d.tsc" for 3 input voltage sources of Sine, Triangular & Square waves in Tina-TI, the simulated waveforms are as attached. However, there is big distortion on the output waveforms (marked in red circles) if the input sources are Triangular & Square waves. Would you please check why?
Thanks.
Ming
Ming,
I suspect the distortions are due to a transient simulation time steps that are too big.
The default max step size can be seen in the table at Analysis/Set Analysis Parameters.
The default setting for the TR Maximum Time Step is "10G" which is an adaptable step size that changes from step-to-step.
The distortion disappears if the "10G" is changed to a smaller fixed max time step, like 1 micro-second (1u).
Please give this a try and let me know if you still see the problem.
Regards,
John