[sdiy] 566

[jbv]

Steve Ridley :

> 'evening all...
>
> Maybe I'm being a bit dim tonight, but I just can't see why
> anyone gets excited about these ICs.   They're scarce, can
> be expensive and need some clever cludging make a VCO
> which still goes flat above 9KHz.  With people making so
> much effort to get them and build VCOs out of them, I feel
> I must be missing something, but I can't see what?

OK I see your point. But when you get 40 pcs for less than
$30 you start to wonder what to do with these...

Anyway, let's put it the other way around : what could be the
best (and cheapest, in terms of parts # and PCB room) solution
for a bank of VCOs (and possibly VCFs & VCAs), providing
that :
- tuning between VCOs is crucial
- all expo converter operation for CV inputs can be handled by
uC / software
- ouputs should include at least square / tri / sine...

Thanks,
JB