[sdiy] modern AD/DA chips?
Seb Francis
seb at burnit.co.uk
Thu May 7 00:57:12 CEST 2009
Antti Huovilainen wrote:
>
> If I were to build a Midi2cv, I'd scrap Paia & related designs as
> outdated and build something with a simple MCU and a serial DAC.
>
Like this for example:
http://burnit.co.uk/sdiy/index.php?page=fatcontroller&subpage=schematic
Uses a 14bit serial DAC, 0.5-1 LSB INL depending on grade. Overall
accuracy including opamps, S&H, etc. ended up within 2 cent over a 15
octave range. And having all those 'spare' bits means things like pitch
bend, envelopes, LFOs can be done 100% in software.
Not cheap, but then again they have a nice 'Sample' button....
Seb
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