SAW Components
Low Loss Filter for Mobile Communication
Data Sheet
B4543
255,00MHz
SMD ceramic package
QCC12
Features
q
q
q
q
IF low loss filter for mobile telephone
Channel selection in PWT system
Ceramic SMD package
Balanced and unbalanced operation possible
Terminals
q
Ni, gold-plated
Dimensions in mm, approx. weight 0,44 g
Pin configuration
5
4
11
10
2,6,8,12
1,3,7,9
Input
Input ground or balanced input
Output
Output ground or balanced output
Case - Ground
Not connected
Type
B4543
Ordering code
B39261-B4543-Z510
Marking and Package
according to
C61157-A7-A38
Packing
according to
F61074-V8026-Z000
Electrostatic Sensitive Device
(ESD)
Maximum ratings
Operable temperature range
Storage temperature range
DC voltage
Source power
T
T
stg
V
DC
P
s
– 25/+ 55
– 40/+ 85
0
10
˚C
˚C
V
dBm
source impedance 50
Ω
Terms of delivery and rights to change design reserved.
Page 1 of 3
OFW EM CP
Mar 11, 1999
SAW Components
Low Loss Filter for Mobile Communication
Data Sheet
Characteristics
Operating temperature:
Terminating source impedance:
Terminating load impedance:
B4543
255,00MHz
T
= 25 ˚C
Z
S
= 150
Ω
|| 29 nH
Z
L
= 300
Ω
|| 47 nH
min.
typ.
255,00
8,5
590
max.
255,04 MHz
9,5
616
dB
kHz
Nominal frequency
Minimum insertion attenuation
(including losses in the matching network)
Pass bandwidth
(α
rel
<3dB)
Group delay ripple
(p-p)
f
N
- 288 kHz
...
f
N
α
min
254,96
—
B
3dB
∆τ
536
f
N
+ 288 kHz
α
rel
—
220
250
ns
Relative attenuation
(relative to
α
max
)
f
N
±
0,75 MHz ...
f
N
±
1,00 MHz
f
N
±
1,00 MHz ...
f
N
±
2,00 MHz
f
N
±
2,00 MHz ...
f
N
±
8,00 MHz
Impedance
in passband
Input:
Z
IN
=
R
IN
||
C
IN
Output:
Z
OUT
=
R
OUT
||
C
OUT
Temperature coefficient of frequency
1)
Frequency inversion point
1)
Temperature
20
35
45
27
39
49
—
—
—
dB
dB
dB
—
—
175 || 11
430 || 8
– 0,036
20
—
—
—
—
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
)
Test matching network to 50
Ω
(element values depend on PCB layout):
C
p1
L
s2
L
s3
C
p4
=
=
=
=
22
18
27
18
pF
nH
nH
pF
Terms of delivery and rights to change design reserved.
Page 2 of 3
OFW EM CP
Mar 11, 1999
SAW Components
Low Loss Filter for Mobile Communication
Data Sheet
Transfer function:
B4543
255,00MHz
Transfer function
(pass band):
Terms of delivery and rights to change design reserved.
Page 3 of 3
OFW EM CP
Mar 11, 1999
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