In digital PWM (Pulse Width Modulation) the concept of modulation index is present and similar to its analog counterpart. Can you be more precise in your question and let us know what makes you think there is no MI in the digital domain ?
In digital PWM (Pulse Width Modulation) the concept of modulation index is present and similar to its analog counterpart. Can you be more precise in your question and let us know what makes you think there is no MI in the digital domain ?
In the example i mentioned (digital PWM), the MI is the ratio between the duty cycle (modulated) variable and the PWM timer period, possibly taken with respect to its midpoint.
If MI >= 1, you will get full duty cycle, like in the analog domain. Depending on the application, this may not be desirable, and the MI should be taken into account just like in the analog domain.
Regards,