[sdiy] Temperature Compensated Exponential ConverterUsingSSM2164

[David G. Dixon]

Sorry, I blew it!  The temperature coefficient of both metal film resistors
and high-quality trimmers is 100ppm max (so long as the resistor value is
less than about 100k).

> Incidentally, I have looked at the temperature sensitivity specs of metal
> film resistors (~1.5 ppm) and 18-turn trimmers (~100 ppm max), and as long
> as the bulk of the voltage drop is taken across the metal film resistor,
> the effect should be minimal.