SAW Components
SAW RF low loss filter
CSR
Series/type:
Ordering code:
Date:
Version:
B1637
B39172B1637U510
October 16, 2008
2.1
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SAW Components
SAW RF low loss filter
Data Sheet
Application
s
s
s
s
B1637
1748.0 MHz
Low loss RF filter for satellite channel router
Usable passband 40.5 MHz
High rejection
200
Ω
balanced to 75
Ω
unbalanced operation
Features
s
s
s
s
s
s
s
s
Package size 3.0 x 3.0 x 1.1 mm
3
Maximum height of 1.225 mm
Package code DCC6D
RoHS compatible
Approximate weight 0.037 g
Package for
Surface Mount Technology
(SMT)
Ni, gold-plated terminals
Electrostatic Sensitive Device
(ESD)
Pin configuration
s
s
s
s
4
6
2
1, 3, 5
Input
Input
Output
Case ground
Please read
cautions and warnings and
important notes
at the end of this document.
2
October 16, 2008
SAW Components
SAW RF low loss filter
Data Sheet
Characteristics
Temperature range for specification:
Terminating source impedance:
Terminating load impedance:
T = +25 ˚C + 2˚C
Z
S
= 200
Ω
and matching network
Z
L
=
75
Ω
min.
Nominal frequency
Insertion attenuation
at 1748.0 MHz
Pass bandwidth
α
rel
< 1.0 dB
Amplitude ripple (p-p)
1724.6 ... 1771.3
Group delay ripple (p-p)
1729.8 ... 1766.1
f
N
α
0
—
2.7
3.0
—
typ.
@ 25 ˚C
1748.0
max.
—
B1637
1748.0 MHz
MHz
dB
B
1 dB
∆α
MHz
∆τ
MHz
α
rel
—
63.0
—
MHz
—
0.5
1.0
dB
—
6.0
10.0
ns
Relative attenuation (relative to
α
0
)
0.3 ... 862.0 MHz
862.0 ... 1655.5 MHz
1840.5 ... 1956.3 MHz
1956.3 ... 2500.0 MHz
2500.0 ... 3500.0 MHz
Common Mode Rejection Ratio (CMRR)
1724.6 ... 1771.3 MHz
Input VSWR
1724.6
Output VSWR
1724.6
... 1771.3
MHz
60.0
42.0
33.0
42.0
30.0
65.0
50.0
38.0
48.0
36.0
—
—
—
—
—
dB
dB
dB
dB
dB
20.0
28.0
—
dB
—
1.8
2.1
... 1771.3
MHz
—
2.0
2.1
Please read
cautions and warnings and
important notes
at the end of this document.
3
October 16, 2008
SAW Components
SAW RF low loss filter
Data Sheet
Matching network
(element value depends on PCB layout)
L
P
= 18 nH
B1637
1748.0 MHz
Lp
Maximum ratings
Operable temperature range
Storage temperature range
DC voltage
ESD voltage
Input power at
1724.6... 1771.3 MHz
1)
T
T
stg
V
DC
V
ESD
P
IN
–30/+80
–40/+85
0
50
1)
0
˚C
˚C
V
V
dBm
machine model, 1 pulse
source impedance 200
Ω
acc. to JESD22-A115A (machine model), 1 negative & 1 positive pulses.
Please read
cautions and warnings and
important notes
at the end of this document.
4
October 16, 2008
SAW Components
SAW RF low loss filter
Data Sheet
Transfer function
S
21
with matching network
B1637
1748.0 MHz
Transfer function
S
21
(passband)
with matching network
Please read
cautions and warnings and
important notes
at the end of this document.
5
October 16, 2008
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