SAW Components
Low-Loss Filter for Mobile Communication
Data Sheet
B7844
1842,5 MHz
Chip sized SAW package QCS5E
Features
q
Low-loss RF filter for mobile telephone
q
q
q
q
q
q
q
q
0.735
0,075
2
3
PCN systems, receive path
Very low insertion attenuation
Low amplitude ripple
Usable passband 75 MHz
Unbalanced to balanced operation
Impedance transformation from 50
Ω
to 150
Ω
Suitable for GPRS class 1 to 12
Package for
Surface Mount Technology
(SMT)
Pb-free
0,38
0,075
0,44
5
4
bottom view
1
0,68
2,0
side view
Terminals
q
Ni, gold-plated
1,4
top view
Dimensions in mm, approx. weight 0,007 g
Pin configuration
1
3,4
2,5
Input, unbalanced
Output, balanced
Case ground
Type
B7844
Ordering code
B39182-B7844-K410
Marking and Package
according to
C61157-A7-A131
Packing
according to
F61074-V8151-Z000
Electrostatic Sensitive Device
(ESD)
Maximum ratings
Operable temperature range
Storage temperature range
DC voltage
ESD voltage
Input Power at
GSM850, GSM900
GSM1800, GSM1900
Tx bands
T
T
stg
V
DC
V
ESD
P
IN
P
IN
– 20 / + 75
– 40 / + 85
5
50*
15
12
˚C
˚C
V
V
dBm
dBm
Machine Model, 10 pulses
peak power of GSM signal,
duty cycle 4:8
* - acc. to JESD22-A115A (Machine Model), 10 negative & 10 positive pulses
2
Mar 22, 2004
SAW Components
Low-Loss Filter for Mobile Communication
Data Sheet
Characteristics
Operating temperature range:
Terminating source impedance:
Terminating load impedance:
B7844
1842,5 MHz
T
= 25˚C
±
2 ˚C
Z
S
= 50
Ω
Z
L
= 150
Ω
|| 15 nH (balanced)
min.
typ.
1842,5
max.
—
MHz
Center frequency
Maximum insertion attenuation
1805,0 ... 1880,0
Amplitude ripple
(p-p)
1805,0 ... 1880,0
Input VSWR
1805,0 ... 1880,0
Output VSWR
1805,0 ... 1880,0
Output amplitude balance
(|S
31
/S
21
|)
1805,0 ...1880,0
MHz
MHz
f
C
α
max
MHz
∆α
MHz
—
—
1,9
2,1
dB
—
0,6
1,0
dB
—
2,1
2,6
—
2,0
2,6
MHz
-1,0
-0,5 / +0,5
1,0
dB
Output phase balance
(φ(S
31
)−φ(S
21
)+180˚)
1805,0 ...1880,0 MHz
Attenuation
0,0
902,0
940,0
1705,0
1920,0
1980,0
2030,0
2400,0
2500,0
2775,0
2880,0
3610,0
3760,0
5415,0
5640,0
... 902,0 MHz
... 940,0 MHz
... 1705,0 MHz
... 1785,0 MHz
... 1980,0 MHz
... 2030,0 MHz
... 2400,0 MHz
... 2500,0 MHz
... 2775,0 MHz
... 2880,0 MHz
... 3610,0 MHz
... 3760,0 MHz
... 5415,0 MHz
... 5640,0 MHz
... 6000,0 MHz
α
-10
-1 / +3
10
˚
30
45
28
12
15
24
28
32
27
40
28
40
28
35
28
50
50
33
16
18
28
32
37
30
47
46
46
47
44
44
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
3
Mar 22, 2004
SAW Components
Low-Loss Filter for Mobile Communication
Data Sheet
Characteristics
Operating temperature range:
Terminating source impedance:
Terminating load impedance:
B7844
1842,5 MHz
T
= -20 to +75 ˚C
Z
S
= 50
Ω
Z
L
=150
Ω
|| 15 nH (balanced)
min.
typ.
1842,5
max.
—
MHz
Center frequency
Maximum insertion attenuation
1805,0 ... 1880,0
Amplitude ripple
(p-p)
1805,0 ... 1880,0
Input VSWR
1805,0 ... 1880,0
Output VSWR
1805,0 ... 1880,0
Output amplitude balance
(|S
31
/S
21
|)
1805,0 ...1880,0
MHz
MHz
f
C
α
max
MHz
∆α
MHz
—
—
1,9
2,3
dB
—
0,6
1,3
dB
—
2,1
2,6
—
2,0
2,6
MHz
-1,0
-0,7 / +0,5
1,0
dB
Output phase balance
(φ(S
31
)−φ(S
21
)+180˚)
1805,0 ...1880,0 MHz
Attenuation
0,0
902,0
940,0
1705,0
1920,0
1980,0
2030,0
2400,0
2500,0
2775,0
2880,0
3610,0
3760,0
5415,0
5640,0
... 902,0 MHz
... 940,0 MHz
... 1705,0 MHz
... 1785,0 MHz
... 1980,0 MHz
... 2030,0 MHz
... 2400,0 MHz
... 2500,0 MHz
... 2775,0 MHz
... 2880,0 MHz
... 3610,0 MHz
... 3760,0 MHz
... 5415,0 MHz
... 5640,0 MHz
... 6000,0 MHz
α
-10
-1 / +4
10
˚
30
45
28
10
15
23
28
32
27
40
28
40
28
35
28
50
50
33
14
18
28
32
37
30
47
46
46
47
44
44
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
4
Mar 22, 2004
Analogue and Mixed Signal
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