MOTM

y'all,

anyone here have some advice for picking DA converters for a CV circuit? 
I'm looking for something I can generate pitch levels at a fairly high 
sample rate (say 48khz). I don't even know where to begin. I'd like to use 
analog devices chips as I can source them easily.

thanks,
--mikes

depends on how much precision you want. I've reccently used the AD7945 
12bit DAC for a module that generates CV.  For my application I didn't 
need any more precesion than that. I'm updating it at about 100KHz and 
it should go quite a bit faster than that. order some samples to try.

also, Paul posted something about this on the SDIY list once, look here:
http://www.themusic.net/dac.txt

-ryan

Mike Estee wrote:

> y'all,
> 
> anyone here have some advice for picking DA converters for a CV circuit? 
> I'm looking for something I can generate pitch levels at a fairly high 
> sample rate (say 48khz). I don't even know where to begin. I'd like to use 
> analog devices chips as I can source them easily.
> 
> thanks,
> --mikes

On Tue, 15 Mar 2005 MBEDTOM@... wrote:

> Am a bit confused by your request.  (I'm often confused.)  Are wanting a D/A
> to generate waveforms ("generate pitch levels at...") or D/A for generating
> things like 1V/Octave ("DA converters for a CV circuit...")?

I'm looking for a DA to generating rapidly changing 1V/oct CV 
signals. I'm trying to build what is essentially a sequencer, but probably 
closer in functionality to the UEG. I guess this would be a DC signal with 
a rather linear response.

Thanks Tom!
--mikes

I would use one of the ADI 16-bit DACs with a SPI interface.

Paul S.

----- Original Message ----- 
From: "Mike Estee" <squeeker@...>
To: <MBEDTOM@...>
Cc: "MOTM List" <motm@yahoogroups.com>

Sent: Wednesday, March 16, 2005 2:39 PM
Subject: Re: [motm] D/A converters?


> 
> On Tue, 15 Mar 2005 MBEDTOM@... wrote:
> 
>> Am a bit confused by your request.  (I'm often confused.)  Are wanting a D/A
>> to generate waveforms ("generate pitch levels at...") or D/A for generating
>> things like 1V/Octave ("DA converters for a CV circuit...")?
> 
> I'm looking for a DA to generating rapidly changing 1V/oct CV 
> signals. I'm trying to build what is essentially a sequencer, but probably 
> closer in functionality to the UEG. I guess this would be a DC signal with 
> a rather linear response.
> 
> Thanks Tom!
> --mikes
> 
> 
> 
> 
> Yahoo! Groups Links
> 
> 
> 
> 
> 
> 
>

This is just an update to the list.

As of this point in time, Todd has failed to contact ANYONE who paid
for a Neural Agonizer. We are all in contact with one another, so we
can verify this positively. His messages to this board last January
implying anything different were pure bunkum.

Caveat Emptor!

Greg James