[sdiy] help getting VCO levels down to MN32XX BBD size

[Antti Huovilainen]

On Sun, 13 Sep 2009, Dan Snazelle wrote:

> but i am trying to interface with specific chip.
>
> SO i thought about it and tried changing the ratio to something radical.
>
> i found that i needed a 200 to 1 reduction!!

Watch out with the post chip amplifier. 200x gain is rather too much for a 
typical 3 MHz GBW opamp. You might be better off doing it in two stages 
(say 10x and 20x).

Antti

"No boom today. Boom tomorrow. There's always a boom tomorrow"
   -- Lt. Cmdr. Ivanova