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INA226: Inquiry

Part Number: INA226


Good Day. Customer is using a INA226 with a 0.1 ohm shunt current sense resistor and in reading the INA226 datasheet it says that the maximum shunt voltage input range is +/- 81.9x mV. Based on he using a 0.1 ohm shunt resistor and the /- 81.9x mv range. He assume that the maximum current he can read is +/- 819.x ma. Is this correct or he is missing something? Please advise. Thank you very much.

Best Regards,

Ray Vincent

  • Hey Ray,

    Yes exactly. Except you may want to account for tolerance and drift of the Rshunt if necessary and for any additional offset errors from CMR, PSR, IB, Vosi, and additionally any possible noise superimposed onto the Vshunt signal.