[sdiy] Quantizer

[harrybissell]

I added a D-latch that is clocked on the opposite transition of the
clock... so that first
the voltage steps... then 1/2 cycle later the result is latched. Works
MUCH better.

Good first quantizer imho

H^) harry

David Brown wrote:

> I started with an Arp-style quantizer that I found at this site.
> http://www.mindspring.com/~clist/resource/circuits/cv_quant.html
>
> I enhance it a bit with changes to the clock oscillator, parallel (vs
> ripple) counter, and an improved pulse generator to sample the
> quantized voltage.  After prototyping it I also added some hysteresis
> to the input.  If I spent more time with it I would work on the
> hysteresis and the interaction with the 0 reference adjustment a bit
> more although it works.  I wanted to be able to put in pre-quantized
> voltages (e.g. from my CV keyboard) and have them quantize exactly to
> their original values.  The hysteresis makes this a bit complicated
> and I think I ended up close enough.  I also included a lag circuit
> which follows the quantizer or can be used separately.
>
> Schematics and info at:
> http://home.earthlink.net/~dabr/davebr/MOTM/DJB-013_Quantize-Lag/
>
> I also use a quantizer program for the PSIM.  Several have been
> written.  They basically follow the same architecture as suggested
> with the A/D and D/A.
>
> Dave
>
> At 07:52 PM 12/28/2004, dustin sedlacek wrote:
>
>> we are looking for a somewhat simple voltage Quantizer to put
>> inbetween a sequencr and a oscillator , can someone give me a some
>> ideas ?
>> --
>> Dustin
>