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internal temp sensor ad7794

Question asked by Kolik on Feb 1, 2012
Latest reply on Nov 6, 2012 by Valium

Of the ten samples ad7794 in two measuring the internal temperature sensor coincides with the measured temperature standard thermometer, and the rest - the measured temperature differs by 4-5 degrees from actual temperature. Help find the cause.

Later in the two samples exceeded the measured data of voltage on AN1-AN6 input does not depend on the ambient temperature, and the rest - it depends.

Including internal zero and span calibration every 5 degrees.

Sincerely, Albert.

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