SAW Components
Data Sheet B4908
SAW Components
Low-Loss Filter for Mobile Communication
Data Sheet
Features
q
Low-loss IF filter for mobile telephone, transmit
q
q
q
q
B4908
158,55 MHz
Ceramic package
QCC8B
path
Low amplitude ripple
Usable passbands 1,3 MHz
Balanced and unbalanced operation possible
Ceramic package for
Surface Mounted
Technology (SMT)
Terminals
q
Ni, gold-plated
Dimensions in mm, approx. weight 0,07 g
Pin configuration
2
3
6
7
4,8
1,5
Input
Input
Output
Output
Case - Ground
To be grounded
Type
B4908
Ordering code
B39161-B4908-Z810
Marking and Package
according to
C61157-A7-A46
Packing
according to
F61074-V8037-Z000
Electrostatic Sensitive Device
(ESD)
Maximum ratings
Operable temperature range
Storage temperature range
DC voltage
Source power
T
T
stg
V
DC
P
IN
– 40 / + 85
– 40 / + 85
0
10
˚C
˚C
V
dBm
source impedance 50
Ω
2
Jan 22, 2001
SAW Components
Low-Loss Filter for Mobile Communication
Data Sheet
Characteristics
Operating temperature range:
Terminating source impedance:
Terminating load impedance:
B4908
158,55 MHz
T
= -40 to +85 ˚C
Z
S
= 470
Ω
|| 470 nH, single ended (pin 3)
Z
L
= 470
Ω
|| 680 nH, balanced
min.
typ.
158,55
max.
—
MHz
Center frequency
f
c
—
Maximum insertion attenuation
α
max
157,90
...
159,20 MHz
Amplitude ripple in passband
(p-p)
∆α
157,90
...
159,20 MHz
Phase linearity deviation
157,90
...
Attenuation
0,00
130,00
139,00
165,55
178,00
475,00
...
...
...
...
...
...
130,00
139,00
151,55
178,00
475,00
1000,00
MHz
MHz
MHz
MHz
MHz
MHz
∆φ
159,20 MHz
α
min
—
2,5
3,0
dB
—
0,5
1,0
dB
—
0,6
1,5
˚rms
50
40
30
14
35
45
55
52
39
16
40
70
—
—
—
—
—
—
dB
dB
dB
dB
dB
dB
3
Jan 22, 2001
SAW Components
Low-Loss Filter for Mobile Communication
Data Sheet
B4908
158,55 MHz
Transfer function
(wideband):
Transfer function
(narrowband):
4
Jan 22, 2001
SAW Components
Low-Loss Filter for Mobile Communication
Data Sheet
B4908
158,55 MHz
Transfer function
(passband )
:
5
Jan 22, 2001
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