SAW Components
Preliminary Data Sheet B3608
SAW Components
Low-Loss Filter
Preliminary Data Sheet
B3608
140 MHz
Ceramic package
QCC 12
Features
q
High performance IF bandpass filter
q
Constant group delay
q
Hermetically sealed ceramic package
Terminals
q
Gold plated
Dimensions in mm, approx. weight 0,4 g
Pin configuration
11
1
5
7
2, 3, 4, 6,
8, 9, 10, 12
Input or balanced Input
Input-Ground or bal. Input
Output or balanced Output
Output-Ground or bal. Output
Must be grounded
Type
B3608
Ordering code
B39141B3608Z510
Marking and Package
according to
C61157A0007A055
Packing
according to
F61074V8026Z000
Electrostatic Sensitive Device
(ESD)
Maximum ratings
Operable temperature range
Storage temperature range
DC voltage
Source power
Source power
T
T
stg
V
DC
P
s
P
s
– 40/+ 85
– 40/+ 85
0
10
20
˚C
˚C
V
dBm
dBm
source impedance 50
Ω
s. imp. 50
Ω,
duty cycle 1:100
2
Jul 12, 2002
SAW Components
Low-Loss Filter
Preliminary Data Sheet
Characteristics
Operating temperature:
Terminating source impedance:
Terminating load impedance:
T = 25 ˚C
Z
S
= 50
Ω
and matching circuit
Z
L
= 50
Ω
and matching circuit
B3608
140 MHz
min.
Center frequency
(Center between 3dB points)
Insertion attenuation
at f
C
Group delay
at
f
C
typ.
140,00
max.
140,25 MHz
f
C
139,75
α
C
τ
C
—
1,18
10
1,23
11
dB
1,28
µs
3
Jul 12, 2002
SAW Components
Low-Loss Filter
Preliminary Data Sheet
Characteristics
Operating temperature:
Terminating source impedance:
Terminating load impedance:
Group delay aperture:
T = -40 ˚C ... +85 ˚C
Z
S
= 50
Ω
and matching circuit
Z
L
= 50
Ω
and matching circuit
200 kHz
min.
Center frequency
(Center between 3dB points)
Insertion attenuation
at f
C
typ.
140,00
max.
B3608
140 MHz
f
C
138,85
141,15 MHz
α
C
—
—
13
dB
Amplitude ripple
(max peak to adjacent valley)
∆α
133,60 ... 146,40 MHz
(80% of
B
3dB
)
Phase ripple
(p-p)
(80% of
B
3dB
)
Pass bandwidth
α
rel
≤
1 dB
α
rel
≤
3 dB
α
rel
≤
40 dB
Relative attenuation
relative to
α
C
100,00 ... 128,70
128,70 ... 129,00
151,00 ... 152,30
152,30 ... 180,00
∆ϕ
133,60 ... 146,40 MHz
—
0,5
0,9
dB
—
7
14
˚
B
1dB
B
3dB
B
40dB
α
rel
MHz
MHz
MHz
MHz
15,0
16,0
—
16,0
16,8
21,0
—
—
22,0
MHz
MHz
MHz
40
37
24
40
45
43
30
45
—
—
—
—
dB
dB
dB
dB
Group delay ripple
(p-p)
∆τ
(80% of
B
3dB
)
133,60 ... 146,40 MHz
Reflected wave signal suppression
0,70
µs
… 3,75
µs
after main pulse
Temperature coefficient of frequency
—
80
140
ns
35
38
– 87
—
—
dB
ppm/K
TC
f
—
4
Jul 12, 2002
SAW Components
Low-Loss Filter
Preliminary Data Sheet
Matching circuit:
Element values depending on PCB layout
Input and output unbalanced
B3608
140 MHz
C
p1
=33pF
L
s2
=100nH
L
s3
=56nH
L
p4
=39nH
Input and output balanced
C
s1
=27pF (Pin 1)
C
s2
=22pF (Pin 11)
L
p1
=62nH
L
p2
=62nH
C
s3
=13,5pF (Pin 5)
C
s4
=20,7pF (Pin 7)
5
Jul 12, 2002
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