APPLICATION NOTE
2
Series Resonant Frequency
f
s
= 1/(2π√ L
s
C
s
)
Parallel Resonant Frequency
f
p
= 1/2π√ L
s
(C
p
*C
s
)/(C
p
+C
s
)
Crystal Oscillators Q-factor
Q = X
L
/R = 2πfL/R
If this Q-factor value is high, it contributes to a greater frequency stability of the crystal at its operating frequency
making it ideal to construct crystal oscillator circuits.
A Crystal has an extremely high Q-Factor (Quality Factor) of 5000 or more, which leads to very long simulation
time for any oscillation to build up.
It is possible that due to numerical range initial amplitude build up may not get propagated to next simulation cycle
and the oscillation build up is not visible.
A pulse is injected in the Crystal circuit or Initial Condition specified on Capacitors to accelerate the amplitude
build up and speed up simulation.
Simulation results
Figure 2: Circuit diagram
