This is in fact a class assignment, but it is for a senior-level design
project in which the object is to design an educational development board
for Cygnal Integrated Products' 'F020 MCU and provide laboratory modules to
go with it.  Cygnal has expressed interest in a laboratory that would show
the respective advantages of the 8- and 12-bit A/D (both on-chip).  So far
our design team has been unable to think of a particular application where
8-bit resolution would produce detectably inaccurate results compared to the
12-bit converter.

Thanks,
Ethan Swint

----- Original Message -----
> There are several applications.  Use the 12-bit when you need accuracy
more than
> speed, and use the 8-bit when you need speed over accuracy.  It might help
you
> come up with a need for the 12-bit A/D if you remember that even though
the
> levels measured at an A/D should fall between the min and max reference
levels,
> the initial source of what you are measuring may have been divided down or
> shifted to fit within those constraints.
>
> I could give several specific examples, but your question is vague and
your
> e-mail is coming from a .edu address.  I get the feeling that any answer
more
> specific might be the answer to a class assignment.
>
> -Mike
>
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