> 10 bits means 1 bit is about 0.1% of full scale.  Are you using
> precision components elsewhere in your circuit, or the usual 5%
> resistors and 20% caps? :-)

What calibration is for? :-)

Tamas



On 25/10/06, William Chops Westfield <westfw@mac.com> wrote:
>
>
> On Oct 25, 2006, at 12:44 AM, Pearce, AB (Alan) wrote:
>
> >>> btw, 10 bits __is__ high resolution, anything above
> >>> or equal to 6 bits is quite good resolution.
> >>
> >> Not in my language!  12 bit ADC/DACs is the minimum
> >> I use in my job, and 16bits is more common.
> >
> > I would agree. 10 bit is low resolution, 12 & 14 bit is easily the
> > common resolutions now, and 16 bit when the extra accuracy is needed.
> >
> 10 bits means 1 bit is about 0.1% of full scale.  Are you using
> precision components elsewhere in your circuit, or the usual 5%
> resistors and 20% caps? :-)  Designing "the rest of the circuit"
> to surround a a 12 or 14bit A2D is a task I find rather mind
> boggling...
>
> (Of course, one excuse for lots of bits is that the range of the
> input isn't anywhere near full scale, and indeed adding the components
> to scale the input would introduce larger errors than you get by using
> only a fraction of the range of the A2D...)
>
> BillW
> --
> http://www.piclist.com PIC/SX FAQ & list archive
> View/change your membership options at
> http://mailman.mit.edu/mailman/listinfo/piclist
>



-- 
unPIC -- The PIC Disassembler
http://unpic.sourceforge.net
-- 
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist