[sdiy] Getting back to my Midi->CV converter...

[Grant Richter]

Bear in mind the refresh rate is also the latency time. You need to refresh
every channel once a millisecond. Also use polycarbonate caps for the sample
and holds.

I build a large scanned sample and hold array (80 channels) for testing
infared temperature detectors. Getting 12 bit accuracy at high speed was
quite a challenge. You can really see dielectric absorption in action!

> From: patchell <patchell at silcom.com>
> Date: Thu, 10 Oct 2002 21:46:35 -0700
> To: "synth-diy at dropmix.xs4all.nl" <synth-diy at dropmix.xs4all.nl>
> Subject: [sdiy] Getting back to my Midi->CV converter...
> 
> http://www.silcom.com/~patchell/miditocv/miditocv.html
> 
> I noticed I originally posted that page about 4 years ago...my how
> time flies.
> 
> The web page gives a very brief description of what I plan on doing,
> plus, I posted a schematic of the FPGA I just got to compile that is
> going to do the DMA services for updating the sample/holds...yep, I said
> DMA...just call me crazy Jim...it has been a while since I did a DMA
> (about 15 years), so I decided to so this to get my feet wet again
> before tackling the nasty one I am going to start at work.
> 
> --
> -Jim
> ------------------------------------------------
> * Visit:http://www.silcom.com/~patchell/
> *-----------------------------------------------
> *I'm sure glad Merry Christmas comes just once a year
> * -Yogi Yorgensen
> ------------------------------------------------
> 
> 
>