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INA190: INA190

Sudeep Pawar
Prodigy 30 points
Part Number: INA190
Other Parts Discussed in Thread: ISO1228,

Tool/software:

I want to measure current consumption of my metal detect sensor which operates on 24V DC and it is of PNP style output.it current consumption in idele state is 10mA and on metal detect event 12mA / max 15mA. So i want to measure this small amount of current variation as s status indication for sensor working or not.
PLease suggest appropriate part/ ic to achive my goal. Sometimes power path is noisy so need better sensitivity and filter.

  • 0
    Prodigy 30 points

    Hi,

    I have inductive TPD PNP sensor, Part No # NI75U-Q80-VP4X1-H1141 connected via Isolator IC as input to IoT device. See the block diagram.
    I want to make another Embedded MCU based device to get health of TPD sensor and want to detect fault conditions.
    1) Sensor not powered ON
    2) Sensor Short
    3) Output line/wire break from isolator and floating
    there are the three fault conditions for my logic.
    So I want to connect one more mcu based device and want diagnose these details either by power path or output path.
    I thinking to use ISO1228 on output line which has output either parallel mode or serial mode which I can use to MCU for analysis. Is it possible
    to detect these above mentioned conditions by using this ISO1228?

  • 0 in reply to Sudeep Pawar
    TI__Expert 7300 points

    Hi Sudeep,


    I can answer your question from the perspective of the INA190, for the ISO1228, you'll need to create another post addressing the team that supports the device.

    The INA190 is one of our most precise devices with a very low Ib of 0.5pA, so it can be used in your application. To address the noise, you can add input filters to filter them out, as detailed in the datasheet. 

    Best,
    Mallika Senthil