SAW Components
Low-Loss Filter for Mobile Communication
Data Sheet
B4218
1865,0 & 1895,0 MHz
Ceramic package
QCC8D
Features
q
Low-loss 2-in-1 RF filter for mobile telephone
q
q
q
q
q
PCS systems, transmit path
Device with two integrated Tx-filter
Usable passband of Tx-filter 1 30 MHz
Usable passband of Tx-filter 2 30 MHz
No matching network required for operation
at 50
Ω
Package for
Surface Mounted Technology
(SMT)
Terminals
q
Ni, gold-plated
Dimensions in mm, approx. weight 0,037 g
Pin configuration
1
7
2,6
3
5
4,8
Type
B4218
Input Tx-filter 1
Output Tx-filter 1
To be grounded
Input Tx-filter 2
Output Tx-filter 2
Case-ground, to be grounded
Ordering code
B39192-B4218-U810
Marking and Package
according to
C61157-A7-A72
Packing
according to
F61074-V8101-Z000
Electrostatic Sensitive Device
(ESD)
Maximum ratings
Operable temperature range
Storage temperature range
DC voltage
Input power max.
1850...1910 MHz
T
T
stg
V
DC
P
IN
– 40 /+ 85
– 40 /+ 85
3
10
˚C
˚C
V
dBm
source and load impedance 50
Ω
continuous wave
2
Jan 14, 2002
SAW Components
Low-Loss Filter for Mobile Communication
Data Sheet
Characteristics of Tx-filter 1
Operating temperature range:
Terminating source impedance:
Terminating load impedance:
B4218
1865,0 & 1895,0 MHz
T
= -30 to +85 ˚C
Z
S
= 50
Ω
Z
L
= 50
Ω
min.
typ.
1865,0
max.
—
MHz
Center frequency
Maximum insertion attenuation
1850,0 ...1880,0
Amplitude ripple
(p-p)
1850,0 ...1880,0
Input return loss
1850,0 ...1880,0
Output return loss
1850,0 ...1880,0
Attenuation
10,0
1570,0
1580,0
1780,0
1800,0
1930,0
1960,0
2400,0
3000,0
5550,0
Rx band suppression
1930,0 ...1960,0
LO suppression
2113,0 ...2174,0
MHz
MHz
...1570,0
...1580,0
...1780,0
...1800,0
...1805,0
...1960,0
...2400,0
...3000,0
...4000,0
...5640,0
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
f
c
α
max
MHz
∆α
MHz
—
—
1,8
2,5
dB
—
0,7
1,4
dB
9,0
10,0
—
dB
9,0
α
25,0
30,0
29,0
25,0
20,0
38,0
32,0
22,0
15,0
0,0
α
38,0
α
32,0
10,0
—
dB
29,0
32,0
32,0
30,0
26,0
45,0
35,0
32,0
19,0
5,0
—
—
—
—
—
—
—
—
—
—
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
45,0
35,0
—
—
dB
dB
3
Jan 14, 2002
SAW Components
Low-Loss Filter for Mobile Communication
Data Sheet
Characteristics of Tx-filter 2
Operating temperature range:
Terminating source impedance:
Terminating load impedance:
B4218
1865,0 & 1895,0 MHz
T
= -30 to +85 ˚C
Z
S
= 50
Ω
Z
L
= 50
Ω
min.
typ.
1895,0
max.
—
MHz
Center frequency
Maximum insertion attenuation
1880,0 ...1910,0
Amplitude ripple
(p-p)
1880,0 ...1910,0
Input return loss
1880,0 ...1910,0
Output return loss
1880,0 ...1910,0
Attenuation
10,0
1570,0
1580,0
1780,0
1800,0
1960,0
1990,0
2400,0
3000,0
5640,0
Rx band suppression
1960,0 ...1990,0
LO suppression
2113,0 ...2174,0
MHz
MHz
...1570,0
...1580,0
...1780,0
...1800,0
...1830,0
...1990,0
...2400,0
...3000,0
...4000,0
...5730,0
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
f
c
α
max
MHz
∆α
MHz
—
—
1,8
2,5
dB
—
0,7
1,4
dB
9,0
10,0
—
dB
9,0
α
25,0
30,0
29,0
25,0
22,0
38,0
32,0
22,0
15,0
0,0
α
38,0
α
32,0
10,0
—
dB
29,0
32,0
32,0
30,0
29,0
45,0
35,0
30,0
19,0
5,0
—
—
—
—
—
—
—
—
—
—
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
45,0
35,0
—
—
dB
dB
4
Jan 14, 2002
SAW Components
Low-Loss Filter for Mobile Communication
Data Sheet
Transfer function Tx-filter 1
B4218
1865,0 & 1895,0 MHz
Transfer function Tx-filter 1(wideband)
5
Jan 14, 2002
Analogue and Mixed Signal
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