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MCT8316Z: analog vs digital hall sensors

Stefan Lintner
Expert 4695 points
Part Number: MCT8316Z

Hi Team,

According to the datasheet, the motor driver MCT8316ZR can handle both digital Hall sensors and analog Hall sensors. When using analog Hall sensors, is the actual analog value utilized, or is there a threshold such that the resolution is the same as that of a digital Hall sensor, rendering the analog Hall sensor advantageous? Or does using an analog Hall sensor with the MCT8316ZR indeed provide finer resolution than using a digital Hall sensor?

BR,
Stefan

  • +1
    TI__Genius 13460 points

    Hi Stefan,

    The resolution from both an analog and digital hall sensor will be very similar. Inside the MCT8316Z the hall sensor signals are passed into a comparator which will convert the analog signal from the hall sensor into a digital signal. Due to the comparators hysteresis, the comparators output may not change exactly at the zero crossing when using analog hall inputs although this is negligible in performance. 

    Regards,

    Joshua

  • 0
    TI__Expert 5320 points

    hi Josh,

    Do we also have a driver that is (more) suitable for analog hall-sensors? Meaning where the position of the rotor is being detected in an analog way?

    Regards

    Andreas

  • 0 in reply to Isee
    TI__Genius 13460 points

    Hi Andreas,

    I will need to check to see if we have any drivers which are better suited for analog hall sensors. I will aim to get back to you by next Tuesday.

    Regards,

    Joshua