In low-side sensing, the voltage across the sense element is near ground potential, resulting in a low common-mode voltage (typically < 1V). This eliminates the need for high common-mode rejection ratio (CMRR) amplifiers, which are essential in high-side sensing where common-mode voltages can reach the motor supply (for example, 24V or 48V). The DRV837x’s internal CSAs are optimized for this low common-mode environment, enabling the use of simpler, lower-cost amplifier designs with high accuracy, as the SOx outputs (V_SOx = I_SENSE × G_CSA + VREF/2) are referenced to a stable VREF pin.