SAW Components
SAW band–stop filter
ISDB–T
Series/type:
Ordering code:
Date:
Version:
B8742
B39841-B8742-P810
January 21, 2011
2.0
©
EPCOS AG 2011. Reproduction, publication and dissemination of this data sheet, enclosures
hereto and the information contained therein without EPCOS’ prior express consent is prohibited.
SAW Components
SAW band–stop filter
Datasheet
Revision history: changes compared to previous iteration issue
B8742
837.50 MHz
Issue
LK59A_v1.0
B8742_v1.0
B8742_v2.0
Originator
Detailed specification changes
Atsushi Yamauchi Initial release
add ordering code and adaption the filter
Atsushi Yamauchi
type
Atsushi Yamauchi data sheet release
Date
August 20, 2010
November 9, 2010
January 21,2011
Please read
cautions and warnings and
important notes
at the end of this document.
2
January 21, 2011
SAW Components
SAW band–stop filter
Datasheet
Application
s
s
s
s
s
s
B8742
837.50 MHz
Low-loss RF band-stop filter for ISDB-T
Very low insertion loss
Very low amplitude ripple and group delay ripple
Usable pass band width 300 MHz
Impedance at input and output 50
Ω
Unbalanced to unbalanced operation
Features
s
s
s
s
s
s
s
s
Package size 1.4
×
1.1
×
0.4 mm
3
Maximum height of 0.45 mm
Package code QCT5I
RoHS compatible
Approximate weight 0.003 g
Package for
Surface Mount Technology
(SMT)
Ni, gold-plated terminals
Electrostatic Sensitive Device
(ESD)
Pin configuration
s
s
s
s
s
1
2
3
4
5
Input
Coupling pin
Coupling pin
Output
Case ground
5
2
1
3
4
Please read
cautions and warnings and
important notes
at the end of this document.
3
January 21, 2011
SAW Components
SAW band–stop filter
Datasheet
Characteristics (including losses in the matching network)
Temperature range for specification:
Terminating source impedance:
Terminating load impedance:
T = +25 ˚C
±
2 ˚C
Z
S
=
50
Ω
and matching network
Z
L
=
50
Ω
and matching network
min.
Nominal frequency
Minimum insertion attenuation
470.00 ...
710.00 MHz
α
max
—
—
—
α
90.00
830.00
1427.90
1749.90
1920.00
... 222.00 MHz
... 845.00 MHz
... 1447.90 MHz
... 1784.90 MHz
... 1980.00 MHz
∆τ
770.00 MHz
—
5
—
12.0
45.0
52.0
53.0
52.0
13.0
49.0
61.0
63.0
60.0
—
—
—
—
1.3
1.8
2.2
1.6
2.1
2.6
f
N
α
max
—
0.9
1.3
—
typ.
@ 25 ˚C
837.50
max.
—
B8742
837.50 MHz
MHz
dB
Maximum insertion attenuation
470.00 ...
710.00 ...
758.00 ...
Attenuation
710.00 MHz
758.00 MHz
770.00 MHz
dB
dB
dB
dB
dB
dB
dB
dB
Group delay ripple
(p-p)
470.00 ...
ns
Matching network
(element values depend on PCB layout)
L
p2
L
s1
= 18 nH
L
p2
= 15 nH
C
p3
= 0.8pF
L
s4
= 15 nH
C
s5
= 0.5pF
Q factor of inductors:
40 @ 770 MHz
L
s1
1
2
C
p3
3
4
L
s4
C
s5
Please read
cautions and warnings and
important notes
at the end of this document.
4
January 21, 2011
SAW Components
SAW band–stop filter
Datasheet
Characteristics (including losses in the matching network)
Temperature range for specification:
Terminating source impedance:
Terminating load impedance:
T = –30 ˚C to +85 ˚C
Z
S
=
50
Ω
and matching network
Z
L
=
50
Ω
and matching network
min.
Nominal frequency
Minimum insertion attenuation
470.00 ...
710.00 MHz
α
max
—
—
—
α
90.00
830.00
1427.90
1749.90
1920.00
... 222.00 MHz
... 845.00 MHz
... 1447.90 MHz
... 1784.90 MHz
... 1980.00 MHz
∆τ
770.00 MHz
—
5
—
11.0
44.0
52.0
53.0
52.0
13.0
49.0
61.0
63.0
60.0
—
—
—
—
1.3
1.8
2.2
1.7
2.2
2.7
f
N
α
max
—
0.9
1.4
—
typ.
@ 25 ˚C
837.50
max.
—
B8742
837.50 MHz
MHz
dB
Maximum insertion attenuation
470.00 ...
710.00 ...
758.00 ...
Attenuation
710.00 MHz
758.00 MHz
770.00 MHz
dB
dB
dB
dB
dB
dB
dB
dB
Group delay ripple
(p-p)
470.00 ...
ns
Matching network
(element values depend on PCB layout)
L
p2
L
s1
= 18 nH
L
p2
= 15 nH
C
p3
= 0.8pF
L
s4
= 15 nH
C
s5
= 0.5pF
Q factor of inductors:
40 @ 770 MHz
L
s1
1
2
C
p3
3
4
L
s4
C
s5
Please read
cautions and warnings and
important notes
at the end of this document.
5
January 21, 2011
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