high freq vco

[René Schmitz]

At 02:21 14.08.00 +0200, Magnus Danielson wrote:

>http://www.semiconductors.com/pip/NE_SE566
>
>I note the feature:
>
>* Frequency adjustable over 10-to-1 range with same capacitor 

Right, when you use a resistor as a "current source" - poor compliance. But
a transistor source has much better compliance than that. Been there.

>Anyway, there is an PDF so you can fetch that and have a look. The internal
>topology is featured. No SPICE model as far as I can see.

Thats the most interesting part, you realize that the "timing resistor" pin
is really just a current input.
You wouldn't want to sweep using the modulation input.

Bye,
 René


-- 
uzs159 at uni-bonn.de
http://www.uni-bonn.de/~uzs159