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DRV5056-Q1: Does its output voltage clip to VCC or GND if too much magnetic field or negative magnetic field is applied?

Yoshiki Ochi
Genius 9645 points
Part Number: DRV5056-Q1
Other Parts Discussed in Thread: DRV5056

Hi team, 

Does its output voltage clip to VCC or GND if too much magnetic field or negative magnetic field is applied (out of linear range of output voltage)? For example, is the output voltage almost equal to VCC in the case there is too strong magnetic field such as 200mT is on A1-suffix(200mV/mT)? Also is the output voltage almost equal to GND in the case there is negative magnetic field such as -200mT?

Regards,
Ochi

  • 0
    TI__Mastermind 21940 points

    Ochi-san,

    Yes, your understanding about the linear input range is correct.  With DRV5056, the quiescent output voltage is typically 0.6V, and the device is sensitive to positive fields as shown here:

    The result is a linear output response from 0 mT to BL. Fields in excess of BL will clip the output close to Vcc, and fields less than 0 mT will clip as the output attempts to drive to GND.

    So for the A1 version, the sensitivity is 200 mV/mT with Vcc = 5 V.  An applied field of 20 mT would produce an output of Vq + 4V.