Voltage controlled arpeggiator (was Re: [sdiy] Design Process)

[Oren Leavitt]

Ian Fritz wrote:
> At 08:38 PM 2/15/2010, mark verbos wrote:
> 
>> I don't know if this is what you mean by "priority encoder," but you
>> can run each output through an XOR gate with the previous one. That
>> allows only the highest stage that's on to turn on. Sadly, it takes a
>> 4030 for each set of 4 outputs. They add up fast.
> 
> 
> Ah, but there are also chips to do that.  CMOS 4532 for example. (Only 8 
> levels, though.)
> 
> Ian

Add a few OR gates (a 4071) and another 4532 and you've got 16 inputs 
and 4 bits out.
Add a 4 bit to 16 out decoder (4514 or 4515) to that and you should have 
"de-overlapped" steps on the first 10 outputs.

- Oren