
RF Monolithics, Inc.
RFM Europe
1999 by RF Monolithics, Inc. The stylized RFM logo are registered trademarks of RF Monolithics, Inc.
Phone: (972) 233-2903
Phone: 44 1963 251383
Fax: (972) 387-8148
Fax: 44 1963 251510
E-mail: info@rfm.com
http://www.rfm.com
SF1189B-1-121604
Page 1 of 5
Suitable for lead-free soldering - Max Soldering Profile
Electrical Characteristics
Characteristic
Sym
f
C
IL
BW
3
Notes
1
Min
Typ
280.0
Max
Units
MHz
dB
MHz
dB
P-P
ns
P-P
Nominal Center Frequency
Passband
Insertion Loss at fc
3 dB Passband
8.3
19.3
10
1, 2
17.97
Amplitude Ripple over fc ±9.0 MHz
Group Delay Variation over fc ±9.0
fc -60 to fc -40 MHz
fc -40 to fc -22 MHz
fc -22 to fc -16 MHz
fc +16 to fc +22 MHz
fc +22 to fc +40 MHz
fc +40 to fc +60 MHz
2.0
60
46
39
39
33
36
45
3.0
125
GDV
Rejection
1, 2, 3
40
37
30
25
34
40
dB
Operating Temperature Range
T
A
1
-10
+85
°C
Differential Input / Output Impedance Match
Case Style
Lid Symbolization (YY=year, WW=week, S=shift)
External L-C
SM5050-8 5 X 5 mm Nominal Footprint
457, YYWWS
SM5050-8
Designed for WLAN IF Applications
Low Insertion Loss
5.0 x 5.0 x 1.7 mm Suface-Mount Case
Single Ended or Differential Input and Output
Differential Output
Complies with Directive 2002/95/EC (RoHS)
Absolute Maximum Ratings
Rating
Value
+10
0
-40 to +85
Units
dBm
VDC
°C
Maximum Incident Power in Passband
Max. DC voltage between any 2 terminals
Storage Temperature Range
260°C for 30 s
280.00 MHz
SAW Filter
SF1189B-1
1.
Unless noted otherwise, all specifications apply over the operating temperature
range with filter soldered to the specified demonstration board with impedance
matching to 50
and measured with 50
network analyzer.
Unless noted otherwise, all frequency specifications are referenced to the nom-
inal center frequency, fc.
Rejection is measured as attenuation below the minimum IL point in the pass-
band. Rejection in final user application is dependent on PCB layout and exter-
nal impedance matching design. See Application Note No. 42 for details.
"LRIP" or "L" after the part number indicates "low rate initial production" and
"ENG" or "E" indicates "engineering prototypes."
2.
3.
4.
5.
The design, manufacturing process, and specifications of this filter are subject
to change.
Either Port 1 or Port 2 may be used for either input or output in the design.
However, impedances and impedance matching may vary between Port 1 and
Port 2, so that the filter must always be installed in one direction per the circuit
design.
US and international patents may apply.
RFM, stylized RFM logo, and RF Monolithics, Inc. are registered trademarks of
RF Monolithics, Inc.
Copyright 1999, RF Monolithics Inc.
Electrostatic Sensitive Device. Observe precautions for handling.
6.
7.
8.
9.
10.
15 pf
50
SAW Filter
TOP VIEW
27 nH
22 pf
pin 3
pin 7
All Others
33 nH
50
RF IC
4:1
22 pf
pin 6
figure 1
Notes:
Connection
Single Ended Input
Differential Output
Ground
Terminals
3
6,7
All others
Port 1
Port 2
Electrical Connections
Pb