ODP: DAC resolution / availability

[Gene Zumchak]

List,

    If you are going to use fewer than all of the bits of the DAC, use the
most significatnt ones, as these are the ones that have to be most accurate in
order to get the best accuracy.

Gene



Roman Sowa wrote:

> Yes, but you can configure it both ways.
> There's one pin (don't remember its name) to do it.
> So you can have upper 8 bits in one word and remaining 4 in the other,
> or if you wish, upper 4 bits in one word and the rest in the other.
>
> Roman
>
> > -----Oryginalna wiadomo¶æ-----
> > Od:   Fraser, Colin J [SMTP:Colin.Fraser at scottishpower.plc.uk]
> > Wys³ano:      17 marca 1999 12:08
> > Do:   'Roman Sowa'; Synth-DIY
> > Temat:        RE: DAC resolution / availability
> >
> > > -----Original Message-----
> > > From: Roman Sowa [mailto:rsowa at WizjaTV.pl]
> > > Sent: 17 March 1999 10:14
> > > To: Synth-DIY
> > > Subject: ODP: DAC resolution / availability
> > >
> > >
> > > Analog Devices AD7548 12-bit DAC (current output)
> > > 8-bit input (2 word loading, but since it would be used as
> >
> > The 2 word loading 12 bit DAC I have used had the 4 upper bits in one
> > register then the 8 lowest bits in the other - make sure that the device
> > you
> > want to use can load the 8 MSBs in one write if your application depends
> > on
> > it.
> > There are DACs available with 12 bit wide interfaces. Serial interfaces
> > are
> > nice too - much easier to route 2 connections than a whole data bus.
> >
> > Colin f