SAW Components
Low-Loss Filter for Mobile Communication
Data Sheet
B4937
109,8 MHz
Ceramic package
QCC10C
Features
s
s
s
s
s
s
s
Low-loss IF filter for mobile telephone
Channel selection in CDMA systems
Very small size
Low insertion attenuation
Balanced and unbalanced operation possible
Filter surface passivated
Ceramic SMD package
Terminals
s
Gold-plated Ni
Dimensions in mm, approx. weight 0,24 g
Pin configuration
10
9
5
4
2, 7
1, 3, 6, 8
Input
Input ground or balanced input
Output
Balanced output or output ground
Case – ground
To be grounded
Type
B4937
Ordering code
B39111-B4937-U910
Marking and Package
according to
C61157-A7-A73
Packing
according to
F6104-V8104-Z000
Electrostatic Sensitive Device
(ESD)
Maximum ratings
Operable temperature range
Storage temperature range
DC voltage
Source power
T
T
stg
V
DC
P
s
– 40/+ 85
– 40/+ 85
0
10
˚C
˚C
V
dBm
2
May 11, 2000
SAW Components
Low-Loss Filter for Mobile Communication
Data Sheet
Characteristics
Operating temperature range:
Terminating source impedance:
Terminating load impedance:
B4937
109,8 MHz
T
= -35 to +85 ˚C
Z
S
= 1200
Ω
|| 120 nH
Z
L
= 1000
Ω
|| 110 nH
min.
typ.
109,8
8,5
max.
—
10,0
MHz
dB
Nominal frequency
Minimum insertion attenuation
(including losses in matching circuit)
Amplitude ripple
(p-p)
f
N
– 0,3 MHz
f
N
α
min
∆α
—
—
...
f
N
+ 0,3 MHz
∆τ
—
0,4
1,0
dB
Phase Linearity
(rms)
f
N
– 0,614 MHz ...
f
N
+ 0,614 MHz
α
rel
—
1,5
3,0
˚
Relative attenuation
(relative to
α
min
)
f
N
±
0,614 MHz
—
38
40
35
35
35
33
40
38
4,0
42
45
39
38
38
35
45
42
40
38
35
40
5,0
—
—
—
—
—
—
—
—
—
—
—
—
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
f
N
– 2,05
f
N
– 1,7
f
N
– 1,25
f
N
– 0,9
f
N
+ 0,9
f
N
+ 1,25
f
N
+ 1,7
f
N
+ 2,05
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
...
...
...
...
f
N
– 25 MHz
f
N
– 1,7 MHz
f
N
+ 0,9 MHz
f
N
+ 1,7 MHz
f
N
– 1,7 MHz
f
N
– 0,9 MHz
f
N
+ 1,7 MHz
f
N
+ 25 MHz
36
33
33
36
Test Matching Network to bal. 200Ω / unbal. 50Ω
(element values depend on PCB layout)
C
s1
= 6,8 pF
C
s2
= 6,8 pF
L
p3
= 82 nH
C
p4
= 2,7 pF
L
p5
= 68 nH
C
p6
= 1,2 pF
C
s7
= 6,8 pF
3
May 11, 2000