Re: Linearizing VCO transfer function
- From: Jim Thompson <thegreatone@xxxxxxxxxxx>
- Date: Sat, 09 Apr 2005 14:54:01 -0700
On Sat, 09 Apr 2005 22:55:07 +0100, John Wilkinson
<johnwilkinson@xxxxxxxxxxx> wrote:
>Joerg wrote:
>> Hello Jim,
>>
>>> Surf on piecewise-linear synthesis. Depending on the curve, it can be
>>> rather painful, particularly if you need temperature compensation as
>>> well.
>>
>>
>> Run another diode in a servo loop, a diode that is located close to the
>> others. Best to use doubles with a common cathode like the BAV70 where
>> the servo diode would be in the same SOT23 package. Has worked well for me.
>>
>> Regards, Joerg
>>
>> http://www.analogconsultants.com
>Hi Joerg,
>This sound simple and efficient, can you send me an example schematic,
>so I can get my head round it.
>
>Thanks,
>John.
Joerg is just addressing the TC of the break-point system. I was
commenting that the tuning curve may have a TC as well (varicap, for
instance).
...Jim Thompson
--
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