DAC resolution

[Fraser, Colin J]

> -----Original Message-----
> From: jorgen.bergfors at idg.se [mailto:jorgen.bergfors at idg.se]
> Sent: 10 March 1999 10:14
> To: Colin.Fraser at scottishpower.plc.uk; synth-diy at mailhost.bpa.nl
> Subject: RE: DAC resolution
> 
> 
> >If the source code for the MCV8 is available, you could 
> probably do the same
> >thing, and add pitchbend too.
> 
> I want to avoid hacking the software, burning PROMs etc. The 
> AD7541AKN seems to be the most promising DAC. It has all the 
> data bits on separate pins, so hopefully there will be no 
> software changes necessary. You can download the datasheet 
> from Analog Devices. Looks good. +-1/2 LSB relative accuracy 
> over the entire temperature range.
>

In that case, there is a version of the BB DAC with a 12 bit parallel input
- just connect the upper bits and tie the rest low.
IIRC that is part DAC7802. I think both the AD and BB devices would be way
more than adequate in this role, so the choice would come down to
availability and price.

Colin f