You need a counter type ADC which essentially is
1. a pulse generator. The pulse duration determines the conversion
2. Gate and control cct.
3. binary counter. No of bits is determined by the maximum voltage to
be digitised and the resolution required.ie. one count will be
equivalent to the resolution voltage.
4. level amplifier.
5. binary ladder of the same no of bits as the counter.
6. one comparator.
Suppose you want to digitise 5 volts with a resolution of 0.001V, so no
of levels is 5/.001= 5000. so you need 13 bit counter. (2 ^12 = 4096
and 2^13 =8192).
hope this helps
> Hi, i am trying to create an a/d converter, however i don;t know where
> to start, I know digital logic and i know electronics, i' have already
> done this in the past for school lab but i just can't seem to get it to
> get all the part required. i need to create a a/d converter with a
> resolution of 3 bits after the decimal.
> thank you