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INA194: INA194 Power consumption

Jason yu
Intellectual 430 points

Part Number: INA194

can you tell me the Power consumption of INA194,  the Supply voltage of INA194 is 3.3V

thanks!

  • 0
    TI__Mastermind 32395 points
    Hello Jason,

    According to the datahseet, the quiescent current (IQ) of the INA194 is specified at a maximum of 900uA at 25 degrees Celsius and with the VOUT pin reading 2V (Vin = 2V/50 = 40mV). More likely you will see the IQ possess the typical value of 700uA. From -40C to +125C the IQ can be at a maximum of 950uA and minimum of 370uA.

    So if you're supply is 3.3V and you assume IQ = 700uA, then the power consumed exclusively by the INA194 = 3.3V*700uA = 2.31 milli-Watts.

    Best Regards,
    Peter Iliya
    Current Sense Applications
  • 0 in reply to Peter Iliya
    Intellectual 430 points

    Hi,Peter

    thanks for your answer