7.3.2 Magnetic Response

The DRV5056 outputs an analog voltage according to Equation 1 when in the presence of a magnetic field:

Equation 1.

where

• V_Q is typically 600 mV
• B is the applied magnetic flux density
• Sensitivity_(25°C) depends on the device option and V_CC
• S_TC is typically 0.12%/°C
• T_A is the ambient temperature
• V_OUT is within the V_L range

As an example, consider the DRV5056A3 with V_CC = 3.3 V, a temperature of 50°C, and 67 mT applied.
Excluding tolerances, V_OUT = 600 mV + 67 mT × (30 mV/mT × [1 + 0.0012/°C × (50°C – 25°C)]) = 2.67 V.

The DRV5056 only responds to the flux density of a magnetic south pole.