CSTCW24M0X53-R0 Datasheet, PDF (9/32 Pages) Murata Manufacturing Co., Ltd. – Ceramic Resonator

P17E.pdf
2012.10.31 ^{Note • Please read rating and CAUTION (for storage, operating, rating, soldering, mounting and handling) in this catalog to prevent smoking and/or burning, etc.}
• This catalog has only typical specifications because there is no space for detailed specifications. Therefore, please review our product specifications or consult the approval sheet for product specifications before ordering.
Principles of CERALOCK^{® 2}
The table on this page shows a comparison of the
equivalent constants between CERALOCK^® and a
quartz crystal oscillator.
In comparison, there is a large difference in capacitance
and Qm, which results in the difference of oscillating
conditions, when actually operated.
The table in the appendix shows the standard values of
an equivalent circuit constant for each type of
CERALOCK^®. Furthermore, other higher harmonic
modes exist, other than the desired oscillation mode.
These other oscillation modes exist because the ceramic
resonator uses mechanical resonance.
Fig. 2-5 shows those characteristics.
CSTLS4M00G53–B0
1M
100k
Main Vibration
10k
3rd Vibration
1k
100
10
1
0
10
20
30
Frequency (MHz)
2
40
Fig. 2-5 Spurious Characteristics of CERALOCK^®
˙Comparison of Equivalent Circuits of CERALOCK^® and Crystal Oscillator
Resonator Oscillation Frequency
L1 (μH)
C1 (pF)
C0 (pF)
2.00MHz
1.71×10³
4.0
20.8
CERALOCK^®
4.00MHz
0.46×10³
3.8
19.8
8.00MHz
0.13×10³
3.5
19.9
2.457MHz
7.20×10⁵
0.005
2.39
Crystal
4.00MHz
2.10×10⁵
0.007
2.39
8.00MHz
1.80×10⁵
0.002
4.48
R1 (Ω)
43.9
9.0
8.0
37.0
22.1
154.7
Qm
475
1220
775
298869
240986
59600
dF (kHz)
177.2
350.9
641.6
3
6
2
7