[sdiy] Choosing a DAC

[Stewart Pye]

Dave,

I have the schematic in PDF. I can email it to you if that's any use...


Regards,
Stewart.




Dave Manley wrote:
> It looks like a 16-pin DIP socket.
>
> It could be used to expansion or test purposes, or...googling...
>
> See section 5-6 Digital Interface: 
> http://www.pro-one-synth.org/manual.php?section=5
>
> Anybody have a link to a pdf for the full Pro-One Service Manual?
>
> -Dave
>
> Mark Rivera wrote:
>> (With the gif displayed as-is in the browser...)
>>
>> Halfway down the west side of:
>> http://machines.hyperreal.org/manufacturers/Sequential/Pro-One/schematics/pro1-schematics-a.gif 
>>
>> is the AD558.
>>
>> Just to the southwest of it is a rectangle that a dashed border and
>> features like ---<4  11>---
>>
>> What is that part of the schematic depicting?
>>
>> Mark
>>
>>
>> On Mon, Jul 6, 2009 at 11:39 PM, Olav Martin 
>> Kvern<okvern at ix.netcom.com> wrote:
>>  
>>> Hi Stewart,
>>>
>>> Do look at the way that Sequential Circuits set up the DAC in the 
>>> Pro-One.
>>> It's an Analog Devices AD558, an 8-bit DAC with an adjustable range. 
>>> They
>>> use it as a 6-bit DAC, and feed it note values from 0 to 63 for just 
>>> over a
>>> 5-octave range at 1 volt per octave. Glide is handled by a separate 
>>> circuit.
>>> It's really pretty brilliant (in my opinion).
>>>
>>> With all of the incredible devices that are available today, it's 
>>> easy to
>>> get hung up on DAC accuracy and resolution, but we can still learn a 
>>> few
>>> tricks from circuitry from 1980.
>>>
>>> Thanks,
>>>
>>> Ole
>>> _______________________________________________
>>> Synth-diy mailing list
>>> Synth-diy at dropmix.xs4all.nl
>>> http://dropmix.xs4all.nl/mailman/listinfo/synth-diy
>>>
>>>     
>>
>>
>>
>>   
>
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