Resonators for the microcomputer compensated crystal oscillator
- 13 January 2003
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
Abstract
The goal of the resonator development program discussed by the authors was to develop dual c-mode resonators which have: frequency vs. temperature (f vs. T) characteristics free of significant anomalies; the minimum possible f vs. T slopes for the temperature ranges of interest; high Q; and small hysteresis. Well-behaved dual c-mode SC-cut resonator designs have been successfully developed. Plano-convex resonators of the proper contour are shown to be well-behaved on both the third overtone, at 10 MHz, and on the fundamental mode over at least a -55 degrees C to +85 degrees C temperature range. Such resonators are shown to be suitable for microcomputer compensated crystal oscillators with a stability of a few parts in 10/sup 8/.<>Keywords
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