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TMAG5170: How much magnetic sensitivity resolution for A1 device with 25mT full scale setting?

Yoshiki Ochi
Genius 9435 points
Part Number: TMAG5170

Hi team, 

How much magnetic sensitivity resolution for A1 device with 25mT full scale setting?

Regards,
Ochi

  • 0
    TI__Mastermind 20990 points

    Ochi,

    TMAG5170 at 1x averaging has 12 bit resolution.  So for +/-25 mT, the full scale input range is 50 mT.  This means the LSB size will be about 12 uT.  However, the input referred noise is about 140 uT for X and Y channels and 70 uT for the Z channel.  If averaging is enabled, the device will over sample to create a 16 bit response, and the input referred noise will drop to 24 uT (X&Y) and 11 uT (Z).

    Thanks,

    Scott