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PICmicro™微控制器振荡器设计指南

资料介绍
Designing a clock oscillator without some knowledge of
the fundamental principals of acoustic resonators is
possible but fraught with the uncertainty of "cut and try"
methods. While the oscillator may be made to run with
the chosen resonator, it is quite likely that the unit will
be slightly off the intended frequency, be grossly off
frequency because it is operating on an unintended
mode, or have unacceptable temperature characteris-
tics because the wrong resonator was chosen for the
application.
This application note is primarily for informational
purposes. It is intended to help the designer of clock
oscillators understand the parameters of crystal
resonators and the terminology of the crystal resonator
industry, both of which tend to be somewhat mysterious
and arcane to the uninitiated. Details of crystal cuts and
rotations, for instance, are of no use to the oscillator
designer, only the designer of crystals. The oscillator
designer still needs to understand and be able to
predict the performance and trade-offs associated with
these parameters. This is not an in-depth or rigorous
treatment of acoustic resonators, but a practical guide,
which should allow the designer to gain a basic
understanding, and to help in choosing and specifying
resonators.
AN588
PICmicro Microcontroller Oscillator Design Guide
Design Challenges
Author: Kim Peck
The PICmicro microcontrollers offer unique design
Consultant
challenges because they are uniquely exible.
Flexibility usually demands difcult decisions on the
Designing a clock oscillator without some knowledge of part of the designer, but offers otherwise unattainable
the fundamental principals of acoustic resonators is ……
PICmicro™微控制器振荡器设计指南
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