I've just started learning about Quantization and I'm a little confused. Currently my understanding of it is that we should use the formula (Vmax-Vmin)/2^n where n is the amount of bits used.
However, using the example of Vmax=5, Vmin=0 and n=3, we would get 625mV as my step size and this is where I'm confused. If 000=0V, then 001 would be
1*625mV=625mV, and so on. But at 111, it would be
7*625mV, which only be 4.375V. Shouldn't 111 be equals to approximately 5V in this case?
If I were to use the formula of (Vmax-Vmin)/2^n-1 instead, it feels like it makes more sense but information online is rather conflicting on this case.