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RE: Is Class D amplification digital?

Hi,

You must take into account both the dead time and the limited switching frequency and the comparators switching time. This severely limits the possible states.

And I would like to add that using a Ramp Waveform and Comparator is one of the ways to make an AD converter.

Calling this "Analogue" is incorrect, sorry. Unless we call everything under the sun "Analogue".

It is a single Bit modulator (AD) of low order with a power switching stage attached.

A simple way to see what is going on is to extract the error and compare the waveform and spectrum to that of an actual analogue amplifier. If the Class D Amp was "analogue" the error signals would be similar.

I wonder what the error signal of something like this will look like?




Thor

At 20 bits, you are on the verge of dynamic range covering fly-farts-at-20-feet to intolerable pain. Really, what more could we need?

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