Javier wrote: > Anyway, a 10544 oscillator has a cold > offset that can easily be of 1000Hz, so if at 80 deg. C the offset is > zero, and at 25 deg. C the offset is 1000Hz, you easily have a rough > 15Hz/deg C average tempco in that range - and the aging drift for this > oscillator is quite less than that.
The 10544A incorporates an AT cut crystal. The tempco is far away from being linear. From room temp to the oven temperature it follows a 3rd order parabola, which has its minimum at the oven temperature. This "trun-over tempearture" varies from unit to unit, which means that the slope of f(T) also changes form unit to unit. Not the best approach for measuring temperatures ;-) At the other hand, the current consumption of the 10544A decreases fairly linear with temperature, so this is a better (but rather slow) temperature sensor, which would even work without the quartz... Regards Bernd DK1AG _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.