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让你的振荡器工作

资料介绍
Many Microchip customers ask us for help when
designing their oscillator circuits. Due to the great num-
ber of combinations of VDD and temperature ranges,
crystal or resonator, loading capacitors, circuit layout
and circuit board materials, it is not practical to provide
a cookbook process that would work well for everyone
or even for most users. However, there are measures
that can be used to develop and test for good working
oscillator circuits.
This application note breaks down the oscillator design
process into the following three parts: specifying the
operating conditions, selecting the components and
testing oscillator performance. Other concerns are also
discussed that may be helpful during layout and
testing.
AN949
Making Your Oscillator Work
Temperature
Author: Brett Duane The product is expected to operate over some temper-
Microchip Technology Inc. ature range. Testing of oscillator operation will be
conducted over the same or slightly larger range. The
temperature affects transistor gain, capacitor values
INTRODUCTION and the crystal/resonator frequency.

Many Mic……
让你的振荡器工作
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