参数资料
型号: SARCC433M87BXP0R05
厂商: MURATA MANUFACTURING CO LTD
元件分类: SAW谐振器
英文描述: 1-PORT SAW RESONATOR, 433.87 MHz
封装: CERAMIC, 6 PIN
文件页数: 17/18页
文件大小: 310K
代理商: SARCC433M87BXP0R05
Oscillation Circuit
s Theory of Oscillation Circuit
Oscillation circuits using LC or quartz crystal are called
'Feedback Oscillators'. Feedback oscillator consists of an
amplifier and a feedback circuit.
The circuit oscillates, with no input signal applied from
outside of the oscillator, when feedback signal from the
output of the amplifier has the same amplitude and phase to
the input signal. The conditions required to the feedback to
enable oscillation are as follows;
Amplitude : G =
α + β U 0 [dB]
Phase :
θ = θ1 + θ2 = 360 x n [degree]
(n: Natural number)
Colpitts is one of the popular oscillation circuits. Basic
structure of Colpitts oscillator is as shown in Fig.2. The
oscillating frequency is approximately same to resonant
frequency of L, CL1 and CL2.
fosc = 1 / (2
π ( L x CL1 x CL2 / ( CL1 + CL2 ))1/2)
1-port SAW RESONATOR is a kind of two terminal resonant
device utilizing piezoelectricity, like quartz crystal bulk wave
resonator or ceramic resonator. The equivalent circuit of
1-port SAW RESONATOR is same to that of quartz or
ceramic resonator, and therefore, impedance characteristics
of SAW RESONATOR is as shown in Fig.1.
Continued on the following page.
1. Fig. 1 Impedance Characteristics of 1-port SAW RESONATOR
2. Basic Structure of Corpitts Oscillator
Fig. 2. Corpitts Oscillator Circuit.
SARCC315M00BXM0
SARCC433M92BXM0
Amplifier
Gain:
α
Phase delay:
θ1
Feedback Circuit
Gain:
β
Phase delay:
θ2
CL1
CL2
L
CENTER 315.000 000 MHz
SPAN 1.000 000MHz
Cor
Hid
Cor
Hid
CENTER 433.920 000 MHz
SPAN 1.000 000MHz
Cor
Hid
Cor
Hid
Fr
Fa
Fr
Fa
Oscillation Circuit
7
1
!Note Please read rating and !CAUTION (for storage and operating, rating, soldering and mounting, 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 approve our product specification or transact the approval sheet for product specification before ordering.
Please read rating and !CAUTION (for storage and operating, rating, soldering and mounting, handling) in this PDF catalog to prevent smoking and/or burning, etc.
This catalog has only typical specifications. Therefore, you are requested to approve our product specification or to transact the approval sheet for product specificaion before ordering.
!Note
P36E.pdf 02.8.5
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