SAW Components
SAW RF filter
Data sheet
Characteristics
Temperature range for specification:
Terminating source impedance:
Terminating load impedance:
T = –30 ˚C to +80 ˚C
Z
S
=
50
Ω
and matching network
Z
L
=
50
Ω
and matching network
min.
Center frequency
(center frequency between 3dB pionts)
f
C
—
typ.
@ 25 ˚C
433.92
max.
—
B3790
433.92 MHz
MHz
Minimum insertion attenuation
α
min
(including losses in matching network)
433.86 ... 433.98 MHz
Pass band
(relative to
αmin)
433.86 ... 433.98 MHz
Relative attenuation
(relative to
αmin)
α
rel
10.00 ... 250.00 MHz
250.00 ... 330.00 MHz
330.00 ... 430.00 MHz
430.00 ... 433.32 MHz
—
3.6
4.3
dB
—
0.5
1.5
dB
60
53
55
32
65
58
60
48
—
—
—
—
dB
dB
dB
dB
434.52 ... 437.00 MHz
437.00 ... 530.00 MHz
530.00 ... 1000.00 MHz
Impedance
for pass band matching
1)
Input: Z
IN
= R
IN
|| C
IN
Output: Z
OUT
= R
OUT
|| C
OUT
1)
29
55
60
34
60
65
—
—
—
dB
dB
dB
—
—
510 || 1.0
510 || 1.0
—
—
Ω
|| pF
Ω
|| pF
Impedance for passband matching bases on an ideal, perfect matching of the SAW filter to source- and to load
impedance (here 50 Ohm). After removal of the SAW filter the input impedance of the input and output match-
ing network is calculated. The conjugate complex value of these characteristic impedances are the input and
output impedances for flat passband. For more details we refer to EPCOS application note #4.
Please read
cautions and warnings and
important notes
at the end of this document.
3
March 03, 2008
EPCOS [ EPCOS ]
