SAW Components
SAW RF filter
Data sheet
Characteristics
Temperature range for specification:
Terminating source impedance:
Terminating load impedance:
T = –40 ˚C to +90 ˚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
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)
—
3.6
4.4
dB
—
0.5
3.0
dB
60
53
55
30
29
55
60
65
58
60
48
34
60
65
—
—
—
—
—
—
—
dB
dB
dB
dB
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.
Maximum ratings
Operable temperature range T
Storage temperature range T
stg
DC voltage
V
DC
Source power
P
S
–45/+125 ˚C
–45/+125 ˚C
6
V
5
dBm
source impedance 50
Ω
Please read
cautions and warnings and
important notes
at the end of this document.
4
March 03, 2008