Doepfer

hmmm but in a shift register module the ouput values are
transported from output 1 to output 2 to output 3 ....
with each clock pulse.

best wishes

ingo



--- In Doepfer_a100@yahoogroups.com, "Dieter Doepfer" <hardware@d...> 
wrote:
> Florian,
> 
> so we are back to the A-152 ?
> 
> The A-152 includes both: clocked (or voltage controlled) 1to8 
switch and
> 8-fold T&H (can be changed to S&H, Christian has already a S&H 
version of
> the A-152 available).
> 
> Dieter
> 
> > -----Ursprüngliche Nachricht-----
> > Von: Doepfer_a100@yahoogroups.com
> > [mailto:Doepfer_a100@yahoogroups.com]Im Auftrag von Florian 
Anwander
> > Gesendet: Mittwoch, 8. Juni 2005 14:34
> > An: Doepfer_a100@yahoogroups.com
> > Betreff: Re: AW: [Doepfer_a100] Re: exotic new modules ideas 
anyone?
> >
> >
> > Hello Dieter
> >
> > > If I'm not mistaken 8 S&H's and switches are required for a 4
> > stage analog
> > > shift register (similar to the BBDs) as you need a n additional
> > slave S&H
> > > for each stage.
> > I do not think, you need an additional slave S&H, if you decouple 
not
> > only the s&h with the input selector, but also the trigger, which 
clocks
> > the s&h.
> >
> > > This is required to have the analogue value available to
> > > forward it to the following stage as the preceeding S&H already 
is
> > > "reloaded" from the stage before.
> > I would avoid to forward the content of one stage to the other 
(causes
> > voltage loss and adds noise). Instead of, I suggest to use a 
clocked
> > 1to8 switch, to switch the output of one s&h-stage to the eight 
outputs.
> >
> > Let me try ASCII sketch (you need courier as font for this):
> >
> >
> > |--common part--|--for each stage-------|
> >
> >            +-...        +------out-bus-5
> >            |            |
> >            +-...        +------out-bus-6
> >            |            |
> >            +-...        +------out-bus-7
> >            |            |
> >            +-...        +------out-bus-8
> > CV in o---|            |
> >            +-----s&h_5--+------out-bus-1
> >            |      |     |
> >            +-...  |     +------out-bus-2
> >            |      |     |
> >            +-...  |     +------out-bus-3
> >            |      |     |
> >            +-...  |     +------out-bus-4
> >         CD4051    |   CD4051
> >                   |
> >            +-...  |
> >            |      |
> >            +-...  |
> >            |      |
> >            +-...  |
> >            |      |
> >            +-...  |
> >            |      |
> > Clock in--|      |
> >            +------+
> >            |
> >            +-...to s&h_6
> >            |
> >            +-...to s&h_7
> >            |
> >            +-...to s&h_8
> >         CD4051
> >
> > The assignment of the outputs at the right CD4051 has to change 
round
> > robbing.
> >
> > Not shown is a adress counter, clocked by the clock, which feeds 
all
> > CD4051 (of course we should not use 4051 because of the know 
pitfalls).
> > The outbut buses should not require adders, becaus always only one
> >
> >
> >
> > Florian
> >
> >
> >
> >
> > Yahoo! Groups Links
> >
> >
> >
> >
> >
> >