ADT7310 questions

Q 

According to the datasheet, there is no need for use calibration. The maximum
tolerances (accuracy for temperature) is guaranteed by production? is there
some certificate that guarantess this limit? This limis guaranteed for what
operation time? Is there need for yearly or other user recalibration?

 

A 

There is no need for user calibration because the accuracy of each device is
fully calibrated and tested to datasheet specifications before it leaves the
factory.
There is no certificate as such that guarantees the limit except for the
datasheet. Standard operational time is typically 10 years.

There is no need for yearly recalibration as the typical life time drift on
these parts is so low approx. 1 lsb (0.0078C).
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