INA190-Q1: INA190-Q1 PSPICE models do not work

fernando garcia

Part Number: INA190-Q1
Other Parts Discussed in Thread: INA191, INA190

Tool/software:

Hi, I downloaded the PSPICE simulation models of INA190-Q1 and they do not work, they have floating nodes, is there a solution for this? Thank you very much in advance.

2 months ago

0 Mallika Senthil 2 months ago

TI__Expert 7300 points

Hi Fernando,

While we look into this, please use the INA191 PSPICE model.
https://www.ti.com/product/INA191#design-tools-simulation

Best,
Mallika Senthil

0 Mallika Senthil 2 months ago

TI__Expert 7300 points

Hi Fernando,

Could you please provide a full test schematic?

Best,
Mallika Senthil

0 fernando garcia 2 months ago in reply to Mallika Senthil

Prodigy 20 points

Hi, I was running this.

0 Mallika Senthil 2 months ago in reply to fernando garcia

TI__Expert 7300 points

Hi Fernando,

Thank you, I'll get back to you soon.

Best,
Mallika Senthil

0 Carolus Andrews 1 month ago in reply to Mallika Senthil

TI__Mastermind 22650 points

Fernando,

I believe the issue here is that you do not have the load grounded in the simulation. The internals of the model need a ground reference to set the common mode of the input to calculate its operating point. I am assuming you want R1 to act as your load here and have the INA190 on the low side. Can you try placing a ground reference on the negative side of the supply (IN-) and try running the simulation again?

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INA190-Q1: INA190-Q1 PSPICE models do not work