INA300: Simulation INA300 in Simetrix

lev nemets1

Part Number: INA300

Tool/software:

Hello, I am trying to simulate INA300 in Simetrix using INA300 Spice model downloaded from TI. Simulation runs 15us only and then has no convergence in transient analysis. I tried different integration methods (Trapezoidal and Gear integration) and different iteration modes (up to Full quad precision) but nothing helped. It always stops after 15us. Could you, please, help with this problem.

Regards,

Lev

8 months ago

0 Joe Vanacore 8 months ago

TI__Genius 17360 points

Hi Lev,

Thank you for your post.

Can you confirm that the convergence error still occurs if you follow the process in this linked thread?

(1) [FAQ] TINA/Spice: How do I avoid convergence issues when TI models are imported into SIMetrix? - Simulation, hardware & system design tools forum - Simulation, hardware & system design tools - TI E2E support forums

Best Regards,

Joe

0 lev nemets1 8 months ago in reply to Joe Vanacore

Intellectual 475 points

Hi Joe,

Thank you for fast respond. I followed your instructions (See pics), but it did not help. Still no convergence after 15us.

Regards

Lev

0 Joe Vanacore 8 months ago in reply to lev nemets1

TI__Genius 17360 points

Hello Lev,

I will look into this and provide you with an update tomorrow.

Best Regards,

Joe

0 Joe Vanacore 8 months ago in reply to Joe Vanacore

TI__Genius 17360 points

Hi Lev,

Please try selecting/checking the "Skip DC bias point" option in the "Transient Advanced Options". Also reducing the maximum step time to < 1ms helps improve the rise/fall time resolution of ALERT pin waveforms, which can be helpful if the ALERT condition is short.

I hope this helps,

Joe

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INA300: Simulation INA300 in Simetrix