[sdiy] Micro as a Linear to Exponential converter?

[Justin Owen]

Thanks Colin (and everyone else) - this is awesome.

Can I just confirm one thing...

>I've used a PIC driving an LTC1597 DAC, followed by a 4051 then LT1112
>op-amps to generate 8 linear CV outputs at 0.5ms refresh rate, with
>RC-shaped portamento done in software, with good results.

So you'd drive the 4051 with  e.g. a Digital I/O pin from the PIC right? I'm guessing that the frequency/speed that would give you would not cause any noticeable fluctuations in the CV by the time it came out of the op-amps on the outputs of your Mux?

Just checking I understand what you're saying.

Thanks again - I'm glad I asked.

Justin