The DRV8311 integrate three high-performance low-side current sense amplifiers for current measurements using built-in current sense. Low-side current measurements are commonly used to implement overcurrent protection, external torque control, or brushless DC commutation with the external controller. All three amplifiers can be used to sense the current in each of the half-bridge legs (low-side MOSFETs). The current sense amplifiers include features such as programmable gain and an external voltage reference (VREF) provided on the pin CSAREF.