INA226: Calculating Total Unadjusted Error

Go Bravos

Expert 6090 points

Part Number: INA226

Team,

What is the total unadjusted error for the INA226AIDGST?

How do I calculate that?

Thank you.

over 5 years ago

0 Javier Contreras4 over 5 years ago

TI__Mastermind 35190 points

Hello Go Bravos,

If you go to the product page and scroll down you will see the RSS Error calculator you can use. If you want to calculate it you need to go through the calculations for each of the errors as shown in this video.

0 Go Bravos over 5 years ago in reply to Javier Contreras4

TI__Expert 6090 points

Hi Javier,

Thank you, but unfortunately I need to get to worse case analysis and not RSS. Is there an application note that can walk me through the calculations or better, identify which parameters from the datasheet that are the contributors?

0 Javier Contreras4 over 5 years ago in reply to Go Bravos

TI__Mastermind 35190 points

The link to the video goes through the errors and the calculations. Let me know if you have questions from the video. It use RSS but all you would have to do is add the error and not do RSS. Also this give you the ability to remove error like DC CMRR or PSRR if the application is in the same operating condition as the global condition.

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INA226: Calculating Total Unadjusted Error