
3
Dec 15, 1999
SAW Components
Low-loss Filter
Data Sheet
B3551
315,00 MHz
Characteristics
Reference temperature:
Terminating source impedance:
Terminating load impedance:
T
A
= 25 C
Z
S
= 50
and matching network
Z
L
= 50
and matching network
1)
Temperature dependence of f
C
: f
C
(T
A
) =
f
C
(T
0
) (1 + TC
f
(T
A
– T
0
)
2
)
min.
—
typ.
315,02
max.
—
Center frequency
(center frequency between 3 dB points)
f
C
MHz
Minimum insertion attenuation
α
min
314,82 ... 315,22 MHz
—
3,0
4,5
dB
Pass band
(relative to
α
min
)
314,77 ... 315,26 MHz
314,71 ... 315,32 MHz
—
—
1,5
2,0
3,0
6,0
dB
dB
Relative attenuation
(relative to
α
min
)
α
rel
10,00 ... 270,00 MHz
270,00 ... 309,00 MHz
309,00 ... 314,00 MHz
316,00 ... 335,00 MHz
335,00 ... 400,00 MHz
400,00 ...1000,00 MHz
45
35
15
10
35
45
50
40
20
15
40
50
—
—
—
—
—
—
dB
dB
dB
dB
dB
dB
Impedance
for pass band matching
Input:
Output: Z
OUT
= R
OUT
|| C
OUT
Z
IN
= R
IN
|| C
IN
—
—
950 || 3,18
960 ||3,14
—
—
|| pF
|| pF
ppm/K
2
Temperature coefficient of frequency
1)
TC
f
T
0
—
–0,03
—
Frequency inversion point
5
—
35
°
C