SAW Components
Low-Loss Filter for Mobile Communication
Data Sheet
Characteristics
Ambient temperature:
Terminating source impedance:
Terminating load impedance:
B4847
360,00 MHz
T
= -20˚C to +75˚C
Z
S
= 340
Ω
|| -1,9 pF
Z
L
= 340
Ω
|| -1,9 pF
min.
Nominal frequency
(center frequency between 3 dB points)
Minimum insertion attenuation
(including loss in matching elements)
Amplitude ripple
(p-p)
f
N
-67,7kHz .. f
N
+67,7 kHz
f
N
-80,0kHz .. f
N
+80,0 kHz
Passband width
α
rel
≤
3,0 dB
Group delay ripple
(p-p)
f
N
-67,7 kHz .. f
N
+67,7 kHz
Relative attenuation
(relative to
α
min
)
f
N
±
400 kHz ... f
N
±
600 kHz
f
N
±
600 kHz ... f
N
±
800 kHz
f
N
±
800 kHz ... f
N
±
1,6 MHz
f
N
±
1,6 MHz ... f
N
±
5,0 MHz
f
N
±
5,0 MHz ... f
N
±
30,0 MHz
Impedance
within the pass band
Input:
Z
IN
=
R
IN
||
C
IN
Output:
Z
OUT
=
R
OUT
||
C
OUT
Temperature coefficient of frequency
1)
Turnover temperature
1)
Temperature
*)
typ.
360,00
max.
—
MHz
f
N
—
α
min
—
∆α
—
—
0,6
0,9
2,0
3,0
dB
dB
4,3
5,0
dB
B
3,0dB
∆τ
—
315
—
kHz
—
α
rel
24
38
42
* 52
55
0,5
1,8
µs
32
48
48
54
62
—
—
—
—
—
dB
dB
dB
dB
dB
—
—
340 || 1,9
340 || 1,9
- 0,036
28
—
—
—
—
Ω
|| pF
Ω
|| pF
ppm/K
2
˚C
TC
f
T
0
—
—
dependence of f
c
:
f
c
(T) = f
c
(T
0
)(1 + TC
f
(T – T
0
)
2
)
In the frequency range from 362,5 MHz to 364,0 MHz there exists one spurious response.
The minimum attenuation
α
rel
of this spurious response is more than 48 dB.
3
Jun 13, 2002
EPCOS [ EPCOS ]
