From yahoo Sent Thu, Apr 23rd 2015, 08:25
From yahoo Sent Thu, Apr 23rd 2015, 08:25
> Hello,
>
> is there anyone who can share some deeper experience with the PLL module
> A-196. I recently bought one, to do some experiments, which should lead
> to some diy-modules.
>
> One idea is, that I want to multiply the frequency of the DIN-Sync clock
> by 40 to get the CSQ-Clock for my CSQ600.
>
> The other approach is to get a highspeed VCO (I want to create a graphic
> VCO with the A155).
>
> I use the A-160/161 as divider.
>
>
> In both cases I am a little lost: I have no idea, which of the three
> comparators I should use. I never get a reliable tracking. If i search
> the web for example, then all I find are examples where the people think
> that this module is a great source of chaotic sounds. My plan is the
> opposite. I want to use it for reliable frequency multiplication.
>
>
> Any help is appreciated.
>
> best regards
> Florian
Hello Florian,
the A-196 is not the right tool for clock multiplication because the A-196 VCO works only in audio range. But the new A-160-5 clock
multiplier will be the right choice. With the control knob you can adjust the multiplication factor (static application of the
module).
For a reliable and clean frequency multiplication in audio range divider and PLL should be on the same board (like the high speed
VCO of our old sound sampler) as the PLL circuit used in the A-196 (CD4046) is very touchy. There are plans for such a module
(A-196-2 with on-board divider) but I have no idea when it will be realized.
Best wishes
Dieter Doepfer
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