Optocoupler selection and usage for isolating a PWM
If you have a 10-bit PWM, which has 1024 steps (2 10 =1024), this high-speed optocoupler would be overkill since the optocoupler can handle over 7,000 steps at that PWM frequency of 2kHz. The point is that the next step is to find a lower cost optocoupler and re-calculate until you find one at the lowest cost and is yet still well above your PWM resolution at …