CSTCW24M0X53-R0 Datasheet, PDF (12/32 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.
2 _{Principles of CERALOCK}^®
It is common and simple to utilize an inverter for the
Colpitts circuit with CERALOCK^®.
Fig. 2-8 shows the basic oscillation circuit with inverter.
In an open loop circuit by cutting at point â¡£ , it is
possible to measure loop gain G and phase shift θ .
Fig. 2-9 shows the actual measuring circuit, and an
example of UIF
measuring result is shown in Fig. 2-10.
2
Rf
A
CERALOCK^®
CL1
CL2
Fig. 2-8 Basic Oscillation Circuit with Inverters
Vin
S.S.G
IC
CERALOCK^®
Rf
C2 C1
Vector
Volt
Meter
Loop Gain : G= α · β
Phase Shift : θ 1+ θ 2
Fig. 2-9 Measuring Circuit Network of Loop Gain and Phase Shift
40
180
30
Phase
(Oscillation)
20
90
Gain
10
0
0
-10
-20
-90
-30
-40
3.80
3.90
4.00
4.10
Frequency (MHz)
-180
4.20
40
180
CERALOCK^®
CSTLS4M00G53–B0
VDD=+5V
CL1=CL2=15pF
IC : TC4069UBPɹɹ
ɹɹ 504)*#"
90
Phase
(No Oscillation)
0
0
Gain
-90
-40
3.80
3.90
4.00
4.10
Frequency (MHz)
-180
4.20
CERALOCK^®
CSTLS4M00G53–B0
VDD=+2V
CL1=CL2=15pF
IC : TC4069UBPɹɹ
ɹɹ 504)*#"
Fig. 2-10 Measured Results of Loop Gain and Phase Shift
10