[sdiy] Interesting Charge-Pump VCO from Electronic Design magazine

[Ian Fritz]

At 05:28 PM 6/15/2009, flightofharmony wrote:
>http://electronicdesign.com/Articles/ArticleID/21195/21195.html
>
>This design is in the current issue, they claim 0-10kHz with 1% linearity
>except in the low end (below ~600Hz, judging by the graph).
>Scaling is 1V/kHz, 0V = 0Hz, 10v = 10kHz

I don't get it. The LM331 just costs a few dollars and in my Double Deka 
design I get better than .05% linearity over 15 octaves (to over 50kHz).
http://bridechamber.com/bridechamber.com/F%20DoubleDeka.html

   Ian