MIDI2CV alternatives (was: Re: [sdiy] Newbie alert :-))

[René Schmitz]

marc bareille wrote:
 >>Paul wrote:
>> nice, but only 8 bit DACs, given the non-linearity errors you get with 
>> 8 bit
>> DACs( 1 or 2 bits) you could have problems with pitch tracking over a 
>> large
>> range.
>>
>>  
>>
> "Only 8 bits DAC" for sure it is ... but  without any trouble on over 8 
> octaves range  in 1V/Oct !!!   Really i love you 8 bits detractors but 
> you should try first may be ...  You will be surprised to discover that 
> if your synths an the MV interface are correctly trimmed 8 bit DACs are 
> sufficient enough  for 1V/Oct scales. Considering the wide number of 
> those interfaces i have builded ,installed in vintages synth, and the 
> impressive number  of feedback emails of happy MCV628/876  builders  i 
> told to myself that if it had a linearity problem , i should seen it as 
> well as other ppl ..

Indeed. And if you look at the datasheet of the DAC0831 you'll find that 
it has quite good linearity. Much less than 1 or 2 bits!!

Cheers,
  René

-- 
uzs159 at uni-bonn.de
http://www.uni-bonn.de/~uzs159