Slightly OT: DAC Questions

[Stewart Pye]

Hi,

I wrote,
>>For MIDI you really only benifit from using a 12 bit DAC if you are
>implementing pitch bend.

Just after I sent this I realised it was incorrect. Of course if you want
good accuracy you need a higher resolution DAC. Sorry for the
misinformation. Personally, I'd use a serial 16 bit DAC anyway.

Stewart.

>
>Hi all,
>
>8 bit DACs cannot resolve accurately the 127 steps needed for the full
>MIDI note range. You need 10bit linearity at least. Best 8 bit DAC is
>the DAC08HP made by AD, 9 bit linearity. But why not buy a 12-bit one
>and save any tuning problems. AD7545 comes to mind. Check the archives
>on this, we have discussed this many times.
>
>I will have a PCB available for a single channel midi-CV convertor in
>the next few weeks. My web site will have more details around that time.
>
>Regards,
>
>Tony Allgood  Penrith, Cumbria, UK
>
>Walsh synthesiser, SuperLadder, TB303 clone and rack mounted filter
>
>http://www.techrepairs.freeserve.co.uk/projects.htm
>
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