SLVSDY6A August 2018 – June 2019 DRV8350 , DRV8350R , DRV8353 , DRV8353R
The sense amplifiers are configured to be unidirectional through the registers on SPI devices by writing a 0 to the VREF_DIV bit.
The sense-amplifier gain and sense resistor values are selected based on the target current range, VREF, sense-resistor power rating, and operating temperature range. In unidirectional operation of the sense amplifier, use Equation 40 to calculate the approximate value of the dynamic range at the output.
Use Equation 41 to calculate the approximate value of the selected sense resistor.
From Equation 40 and Equation 41, select a target gain setting based on the power rating of a target sense resistor.