Digitally compensated crystal oscillator based on the self crystal as temperature sensor

Author

Azcondo, Francisco J. ; Peire, J.

Author_Institution

Dept. de Electron., Cantabria Univ., Burgos, Spain

fYear

1992

fDate

9-13 Nov 1992

Firstpage

1582

Abstract

Digital compensation in temperature techniques for crystal oscillators is presented. Error due to temperature and compensation data resolution is evaluated. Different thermal coefficients between sensor and crystal are studied through experiments on dynamic and static sweeps in temperature. A sensor based on the crystal oscillator has been used to reduce the uncertainty gap in compensation. A specific integrated circuit has been designed to produce thermal data from a dual mode oscillator and correct the output frequency. The calibration function has been programmed in a HCMOS microcontroller, where the thermal transient is evaluated to optimize power consumption

Keywords

compensation; computerised instrumentation; crystal resonators; electric sensing devices; measurement errors; radiofrequency oscillators; temperature measurement; HCMOS microcontroller; calibration function; compensation; computerised instrumentation; crystal oscillator; data resolution; dual mode oscillator; integrated circuit; measurement errors; output frequency; power consumption; self crystal; temperature sensor; thermal coefficients; thermal transient; uncertainty gap; Calibration; Error correction; Frequency conversion; Oscillators; Stability; Temperature dependence; Temperature distribution; Temperature sensors; Varactors; Virtual colonoscopy;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics, Control, Instrumentation, and Automation, 1992. Power Electronics and Motion Control., Proceedings of the 1992 International Conference on

Conference_Location

San Diego, CA

Print_ISBN

0-7803-0582-5

Type

conf

DOI

10.1109/IECON.1992.254364

Filename

254364