CSTCW24M0X53-R0 Datasheet, PDF (22/32 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.
5 ^{Characteristics of CERALOCK® Oscillation Circuits}
This chapter describes the general characteristics of the basic
oscillation of Fig. 4-1 (page17). Contact Murata for detailed
characteristics of oscillation with specific kinds of ICs and LSIs.
1. Stability of Oscillation Frequency
Fig. 5-1 shows examples of actual measurements for stability
of the oscillation frequency.
The stability versus temperature change is ±0.1 to 0.5% within
a range of -20 to +80°C, although it varies slightly depending
on the ceramic material.
Influence of load capacitance (CL1, CL2) on the oscillation
frequency is relatively high, as seen in formula (4-1) (Page18).
It varies approximately ±0.05% for a capacitance deviation of
±10%. The stability versus supply voltage is normally within
±0.05% in the working voltage range, although it varies with
the characteristics of the IC.
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+0.50
Temperature Characteristics
VDD = +5V
+0.25
0
-0.25
-40
0
Max.
Min.
40
80
120
Temperature (℃)
-0.50
+0.50
CL2 (CL1 = Constant) Characteristics
VDD = +5V
CL1 = 6pF Const.
+0.25
0
0
-0.25
1
10
CL2/CL1
-0.50
+0.50
+0.25
CL (CL1 = CL2) Characteristics
VDD = +5V
Supply Voltage Characteristics
+0.50
+0.25
0
-0.25
2
4
6
8
VDD (V)
-0.50
+0.50
+0.25
Starting Voltage
CL1 (CL2 = Constant) Characteristics
VDD = +5V
CL2 = 6pF Const.
0
0
-0.25
1
10
CL1/CL2
-0.50
00
-0.25
1
100
10
CL (pF)
-0.50
Fig. 5-1 Examples of Actual Measurement for the Stability of Oscillation Frequency (IC: TC74HCU04 (TOSHIBA), CERALOCK^®: CSACW33M8X51–B0)
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