[sdiy] Arpeggiator1 / Arduino UNO

[Roman Sowa]

It's actually 8-bit AD558 DAC with 1/2 LSB INL, using upper 6 bits. So 
at worst case one semitone error is 1/8, that's 12.5 cent, or about 6 
cent if they used AD558K grade. In reality it may turn out better as 
this is maximum error.

Roman

W dniu 2015-04-10 o 15:14, MTG pisze:
> The Pro One uses a 6-bit DAC, admittedly just for the keyboard, one step
> per semitone.
>
> On 4/10/2015 2:24 AM, Rick Jansen wrote:
>>
>> Even an 8-bit (ZN426) DAC would have been good enough, it will give
>> you 256 discrete voltages. If you choose the reference voltage and
>> scaling right you will end up with a 83.3 mV per note characteristic..
>>
>> Rick
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