[sdiy] High freq VCO to drive switched cap filters...

[rburnett at richieburnett.co.uk]

I'd go for the VCO part of the 4046 IC if you need voltage control, or 
something using an Analog Devices DDS chip if you can tolerate digital 
programming of the oscillator frequency.

-Richie,



On 2014-04-16 14:41, Jean-Pierre Desrochers wrote:
> I think I found what I was looking for:
> http://www.timstinchcombe.co.uk/synth/mf10/lmf100.pdf
> 
> Le 2014-04-16 09:29, Jean-Pierre Desrochers a écrit :
>> Does anybody have a web link to some
>> high freq vco designs that could drive
>> switched cap filters ?
>> The range should be between 1khz to 2-3mhz.
>> Ideal sweep range between fmin and fmax = 1000 (or higher).
>> What does not matter:
>> -Vc levels,
>> -higher max freq is ok,
>> -lin or log sweep does not matter.
>> 
>> Thanks
>> JP
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