[sdiy] AD/DA schematics? quantizers,etc

[Jerry Gray-Eskue]

Dan,

Here is some info that may be useful:


http://www.national.com/analog/training

Scroll down to mid page and click on DATA CONVERTERS

http://www.national.com/mpf/DC/ADC0808.html

http://www.national.com/mpf/DA/DAC0808.html

<<is it just converting A to D and D to A in a small enough amount of steps
that it comes out stepped in notes?>> Your reference voltages are critical
to make your bit transitions hit the notes. The A to D and D to A should
have the volts per bit Centered on the correct voltages.



-----Original Message-----
From: synth-diy-bounces at dropmix.xs4all.nl
[mailto:synth-diy-bounces at dropmix.xs4all.nl]On Behalf Of Dan Snazelle
Sent: Wednesday, May 13, 2009 7:44 AM
To: synth-diy at dropmix.xs4all.nl
Subject: [sdiy] AD/DA schematics? quantizers,etc




well i got my AD/DA chips in the mail yesterday

i bought 5 each of:

DAC0808lcn

and

ADC0808CCN


now...what i cant find much of are schematics that use these family of
chips.


i know they were used in many older projects though or maybe even old
commercial designs?

my first problem is figuring out HOW to even go about hooking them up in a
useful configuration.

my second question is what do i need to to do when i am trying to make a
quantizer...is it just converting A to D and D to A in a small enough amount
of steps that it comes out stepped in notes? i know how to make an R2R from
parts and isnt it similar? i think i will get out the art of electronics to
see what it says on the whole matter.

i am really trying at first to make:

a sample rate reducer or crusher

and a
quantizer

BUT i would love to try or check out ANY other schematics that use AD/DA
converters to mess with AUDIO or CV.


thanks


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