John Fields a =E9crit :
Absolutely. Sorry about that.
Wouldn't you like to think so ...
Made of silicon resistors, whose resistances chance with voltage in different proportions. This was the specific problme that caused me to reject the part, the only time I looked at it seriously, back in 1974. The LM322, with a built in linear regulator, avoided this problem, but wasn't good enough either - a discrete emitter-coupled multivabrator came close to what we needed. but the temperature dependence of the Early effect turned out to be bi enough to torpedo that solution too.
Apples and pears
So what, they are both near-enough-is-good-enough solutions for the throw-it-together circuit assembler. If you know what you are doing you can always come up with something better.
-- Bill Sloman, Nijmegen (but in Paris today)