INA821: CMMR degradation due to component imbalance

Kelvin Le THS

Expert 6475 points

Part Number: INA821

Is there a formula to calculate the CMMR degradation due to R/C imbalance at the INA inputs?

over 3 years ago

0 Tamara M Alani over 3 years ago

TI__Genius 10850 points

Hi Kelvin,

Thank you for your post. I don't recall a specific formula as you have described. You may consider going back to the definition of CMR in an INA: delta(VOS)/delta(VCM):

0 Kelvin Le THS over 3 years ago in reply to Tamara M Alani

TI__Expert 6475 points

okay thanks

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INA821: CMMR degradation due to component imbalance