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SAW Components
Resonator
Data Sheet
Characteristics
Reference temperature:
Terminating source impedance:
Terminating load impedance:
T A = 25 ?C
Z S = 50 ?
Z L = 50 ?
R 854
314,50 MHz
min.
typ.
max.
Center
frequency 1)
f c
314,45
314,50
314,55
MHz
Minimum insertion attenuation
Unloaded quality factor
α min
Q U
—
9700
1,3
13200
1,6
—
dB
Ageing of f c
—
—
-10/+50 ppm
Equivalent circuit elements
Motional capacitance
Motional inductance
Motional resistance
Parallel capacitance 2)
Temperature coefficient of frequency 3)
Turnover temperature
C 1
L 1
R 1
C 0
TC f
T 0
—
—
—
—
—
15
2,37
107,99
16
3,0
–0,032
—
—
—
22
—
—
35
fF
μ H
?
pF
ppm/K 2
?C
1) Center
frequency is defined as maximum of the real part of the admittance
2) If
used in two port configuration (pin 1-input, pin 3-output) C 0 is reduced by approx. 0,3 pF.
3) Temperature
dependence of f c :
f c (T A ) = f c (T 0 )(1 + TC f (T A – T 0 ) 2 )
3
Aug 08, 2003
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