[sdiy] Tempco 2k +3350ppm Group buy

[Ian Fritz]

At 01:51 PM 5/22/06, René Schmitz wrote:
>Ian Fritz wrote:
>>At 01:43 PM 5/22/06, René Schmitz wrote:
>>The ideal temp coeff is 1/T.  It is not and should not be linear.  :-)
>R(T) of a Tempco is (should be) a linear function of T. Thats what I meant.

Right.  What I was getting at is that manufacturers sometimes have odd ways 
of specifying their devices, and you have to watch out for that as well as 
for nonlinearities.  I agree that the nonlinearities can often distort how 
tempcos are characterized.  For example, if you use measurements at 25C and 
100C to define the tempco you will get a different result than if you use 
25C and 30C.  Probably using measurements at 12C and 32C with reference to 
22C and a target of 3390 ppm/K would be the best for our work.  But you 
never seem to see that.

   Ian