[sdiy] Some thoughts about ladder filter circuit

[Ian Fritz]

At 10:59 AM 12/12/2008, David G. Dixon wrote:
>General question: Are these arrays suitable for VCO expo circuits?  They're
>certainly cheaper than super-matched pairs and quads!


The best bet for NPN pairs right now is the supermatched LM394, which 
Futurlec is selling for an incredible $1.80.  I've said it before and I'll 
say it again: Everybody should stock up on these.

I've used the CA3083 in many projects.  The log conformance is *way* better 
than for the 3046, namely Re = 1.3 Ohm vs. 5.0 Ohms.  The 3046 is pretty 
far down on the list for expo converters.

Ian