Im using a DRV8833 with a MAX98357a audio board and getting interference when the motor runs. I want to see if adding an optoisolator will help with the noise, but want to verify the wiring first, since the DRV8833 wants a shared ground with the controller. Does the isolator take care of that, or should HVG be connected to the DRV’s GND?
Additionally, does the optoisolator need any pullup resistors on the outputs?
