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SAW Components
SAW resonator
Data sheet
Characteristics
Reference temperature:
Terminating source impedance:
Terminating load impedance:
T A = 25 ?C
Z S = 50 ?
Z L = 50 ?
R822
319.508 MHz
min.
typ.
max.
Center frequency 1)
Minimum insertion attenuation
Unloaded quality factor
Ageing of f C
f C
α min
Q U
319.433
—
8500
—
319.508
1.5
11000
—
319.583
1.9
—
–50/+50
MHz
dB
ppm
Equivalent circuit elements
Motional capacitance
Motional inductance
Motional resistance
Parallel capacitance 2)
C 1
L 1
R 1
C 0
—
—
—
—
2.145
115.70
19
2.70
—
—
25
—
fF
μ H
?
pF
Temperature coefficient of frequency 3) TC f
—
–0.032
—
ppm/K 2
Turnover temperature
T 0
20
—
50
?C
1)
2)
3)
Center frequency is defined as maximum of the real part of the admittance.
If used in two port configuration (pin 1 - input, pin 3 - output) C 0 is reduced by approx. 0.3 pF.
Temperature dependence of f C : f C (T A ) = f C (T 0 ) (1 + TC f (T A – T 0 ) 2 )
Maximum ratings
Operable temperature range T
–45/+125 ?C
Storage temperature range
T stg
–45/+125 ?C
DC voltage
V DC
12
V
between any terminals
Source power
P S
0 dBm
Please read cautions and warnings and
important notes at the end of this document.
3
July 09, 2013
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