On 06/15/2013 09:15 PM, Bruce Perens wrote: > On 6/15/2013 2:44 AM, Steve Underwood wrote: >> How did you get to +-220Hz at 440 from the bunch of error factors in >> that data sheet? > By assuming that we can calibrate out everything that isn't a short-term > variation. > > Thanks > > Bruce > How short term are you considering? The temperature variation is 0.3ppm/C. They don't say what the characteristic is like, but temperature compensated clocks usually have such a funky freq vs temp curve its impractical to provide further correction based on measuring temperature yourself.
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