Doepfer

> 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.

Florian

> 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. A bit confusing but I think I'm right.
> 
> The principle of the analog shift register would be this:
> 
> 
> MSH1 -> SW11 -> SSH1 -> SW12 -> MSH2 -> SW21 -> SSH2 -> SW22 -> MSH3 ... and
> so on
> 
> with
> MSH = main S&H of the stage
> SSH = slave S&H of the stage
> SWxy = switch
> 
> The switches SWx1 and SWx2 have to be triggered with opposite phase: all
> switches SWx1 are triggered simultaneously at the falling edge of the clock
> signal to pass on the voltage of the main S&H (MSH) to the slave S&H (SSH).
> All switches SWx2 are triggered simultaneously at the rising edge of the
> clock signal to pass on the voltage of the preceeding slave S&H to the next
> main S&H.
> 
> How about a poll for such a module. Sounds interesting.
> 
> Best wishes
> Dieter Doepfer
> 
> 
> 
> 
> 
>  
> Yahoo! Groups Links
> 
> 
> 
>  
> 
> 
> 

-- 
Florian Anwander                  |ConSol
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