[sdiy] Tempcos a NoGo

[Dave Manley]

Ian Fritz wrote:

> Sounds like you are trying to be careful.  I measured one of these 
> little guys to check its tempco and I thought I saw a bit of self 
> heating.  The manufacturer warns about this, but doesn't give any 
> guidelines.  The thing to look for is pitch drift after a large change 
> in frequency.  I never made a VCO using one, so I don't have any 
> characterization of this.  The good news is that I measured a tempco of 
> ~3350, essentially perfect for transistor compensation.

Forgive me for being too lazy to figure it out (I am at work so I'll use 
that as an excuse) but what range of currents do these see in a typical 
VCO application?

-Dave