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INA219: Power usage in triggered mode

Reid Kersey
Intellectual 590 points
Part Number: INA219

After reading the INA219 datasheet, I am unclear if the device goes into power down mode following a triggered conversion.

What does the device do after a triggered conversion? What is the power usage afterwards?

  • 0
    TI__Mastermind 20695 points

    Hello Reid,

    Thank you for using the TI forums. I tested the INA219 at 5 V to see what current the device uses after each mode has been set, and these are the results:

    MODE3

    MODE2

    MODE1

    MODE

    Current (µA)

    Power (mW)

    0

    0

    0

    Power-down

    65

    0.325

    0

    0

    1

    Shunt voltage, triggered

    720

    3.6

    0

    1

    0

    Bus voltage, triggered

    720

    3.6

    0

    1

    1

    Shunt and bus, triggered

    720

    3.6

    1

    0

    0

    ADC off (disabled)

    720

    3.6

    1

    0

    1

    Shunt voltage, continuous

    742

    3.71

    1

    1

    0

    Bus voltage, continuous

    730

    3.65

    1

    1

    1

    Shunt and bus, continuous

    735

    3.675

    NOTE: This data was taken for one individual part and will vary for each device.

    From this data it seems that after doing a triggered conversion the device goes into ADC off mode, not power down mode.