CSTCW24M0X53-R0 Datasheet, PDF (4/32 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.
1 ^{Characteristics and Types of CERALOCK®}
1. General Characteristics of CERALOCK^®
Ceramic resonators use the mechanical resonance of
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piezoelectric ceramics. (Generally, lead zirconium
titanate: PZT.)
The oscillation mode varies with resonant frequency.
The table on the right shows this relationship.
As a resonator device, quartz crystal is well-known. RC
oscillation circuits and LC oscillation circuits are also
used to produce electrical resonance. The following are
the characteristics of CERALOCK^®.
ᶃ High stability of oscillation frequency:
Oscillation frequency stability is between that of
the quartz crystal and LC or RC oscillation circuits.
The temperature coefficient of quartz crystal is
10^–6/°C maximum and approximately 10^–3 to 10^–4/°C
for LC or RC oscillation circuits. For comparison
these, it is 10^–5/°C at –20 to +80°C for ceramic
resonators.
ᶄ Small configuration and light weight:
The ceramic resonator is half the size of popular
quartz crystals.
ᶅ Low price, non-adjustment:
CERALOCK^® is mass produced, resulting in low
cost and high stability.
Unlike RC or LC circuits, ceramic resonators use
mechanical resonance. This means it is not
basically affected by external circuits or by the
fluctuation of the supply voltage.
Highly stable oscillation circuits can therefore be
made without the need of adjustment.
The table briefly describes the characteristics of various
oscillator elements.
˙Vibration Mode and Frequency Range
Frequency (Hz) _{1k 10k 100k 1M 10M 100M 1G}
Vibration Mode
1
Flexural
mode
2
Length
mode
3
Area
expansion
mode
4
Radius
vibration
5
Shear
thickness
mode
6
Thickness
expansion
mode
7
Surface
acoustic
wave
[Note] :
ˡŠˠ show the direction of vibration
˙Characteristics of Various Oscillator Elements
Name
Symbol
Price
Oscillation
Size
Adjust- _Frequency Long-term
ment ^Initial Stability
Tolerance
LC
lower
cost
Big Required ±2.0%
Fair
CR
lower
cost
Small Required ±2.0%
Fair
Quartz
Crystal
Expen-
sive
Big
Not
required
±0.001%
Excellent
Ceramic
Resonator
Inexpen-
sive
Small
Not
required
±0.5%
Excellent
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