[sdiy] SSM2164 dual sine VCLFO PCB available
Tim Parkhurst
tim.parkhurst at gmail.com
Tue Aug 4 19:32:58 CEST 2009
Hi Neil,
Nice work. I've got to admit that the 2164 is a great chip, and I'm
sure it will start popping up in more designs. One question: do you
find that there is any interaction or phase locking between oscillator
sections built on the same 2164? Thanks, and good luck!
Tim (phase locked... knew I shouldn't have had a big breakfast) Servo
On Tue, Aug 4, 2009 at 2:35 AM, Neil Johnson<neil.johnson97 at ntlworld.com> wrote:
> Hi all,
>
> Hope this is not too commercial...
>
> I've just finished characterizing my latest module - a dual sine VCLFO based on an SSM2164. One VCLFO produces three sinewave outputs, 120 degrees apart, over a range of around 100Hz down to 12 minutes, and a second auxiliary VCLFO with a diode-shaped single sine output from 300Hz down to around 7 minutes.
>
> By changing the capacitors this could also comfortably work in the audio range, but there is no temp.compensation so I wouldn't recommend it for stable VCO usage. Alternatively, a couple of component changes and this will go down to an hour or more per cycle.
>
> Details here:
>
> http://www.milton.arachsys.com/nj71/index.php?menu=2&submenu=0&subsubmenu=2
>
> Boards available if anyone wants to build one too.
>
> Cheers,
> Neil
> --
> http://www.njohnson.co.uk
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