SF1142B 315 MHz SAW Filter
RF Monolithics, Inc.
Phone: +1(972)233-2903
European Sales Office
4347 Sigma Road
Fax: +1(972)387-8148
Dallas, Texas 75244
e-mail:
info@rfm.com
USA
Home page:
www.rfm.com
SF1142B.doc 11/6/2000 D
Electrical Connections
Connection
Terminals
Port 1 Hot
10
Port 1 Gnd Return
1
Port 2 Hot
5
Port 2 Gnd Return
6
Case Ground
All others
Absolute Maximum Ratings
Rating
Value
Units
Maximum Incident Power in Passband
+10
dBm
Max. DC voltage between any 2 terminals
30
VDC
Storage Temperature Range
-40 to +85
C
Max Soldering Profile
265
C for 10 s
Designed for SDARS IF Receiver
Low Insertion Loss
5.0 x 7.0 mm Surface-Mount Case
Differential Input and Output
See Associated Plots
Characteristic
Sym
Min
Typ
Max
Units
Notes
Nominal Center Frequency
fc
315.000
MHz
IL
13.0
14.0
dB
1
BW
1
2.1
2.25
MHz
1.0
dB
P-P
Passband
Insertion Loss at fc
1 dB Passband
Fast Amplitude Ripple over fc
2.1 MHz
Group Delay Variation over fc
2.1 MHz
GDV
75
200
ns
P-P
1, 2
Rejection
100 MHz to fc-4.6 and fc+4.85 to fc+100MHz
40
47
dB
1, 2, 3
Operating Temperature Range
T
A
-40
+85
C
1
Differential Input and Output Impedance
250 ohms
Case Style
SMP-03 7 x 5 mm Nominal Footprint
Lid Symbolization (YY = year, WW = week)
RFM SF1142B YYWW
Notes:
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. Matching components
maximum 2 inductors (Q=30), 2 capacitors and one resistor or transformer at each input and output.
2. Unless noted otherwise, all frequency specifications are referenced to the nominal center frequency, fc.
3. Rejection is measured as attenuation below the minimum IL point in the passband. Rejection in final user application is
dependent on PCB layout and external impedance matching design. See Application Note No. 42 for details.
4. "LRIP" or "L" after the part number indicates "low rate initial production" and "ENG" or "E" indicates "engineering prototypes."
5. The design, manufacturing process, and specifications of this filter are subject to change.
6. 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.
7. US and international patents may apply.
8. RFM, stylized RFM logo, and RF Monolithics, Inc. are registered trademarks of RF Monolithics, Inc.
9.
Copyright 1999, RF Monolithics Inc.
10. Electrostatic Sensitive Device. Observe precautions for handling.
315 MHz SAW Filter
RF Monolithics, Inc. Phone: (972) 233-2903 Fax: (972) 387-8148 E-mail: info@rfm.com
RFM Europe Phone: 44 1963 251383 Fax: 44 1963 251510 http://www.rfm.com
1999 by RF Monolithics, Inc. The stylized RFM logo are registered trademarks of RF Monolithics, Inc. SF1142B
Dimension
mm
Inches
Min
Nom
Max
Min
Nom
Max
A 6.80 7.00 7.20 0.268 0.276 0.283
B 4.80 5.00 5.20 0.189 0.197 0.205
C 1.65 2.00 0.065 0.079
D 0.60 0.024
E 2.54 0.100
H 1.0 0.039
J 5.00 0.197
K 3.00 0.118
P 1.27 0.050
Connection
Terminals
Port 1
Input or Return 10
Return or Input 1
Port 2
Output or Return 5
Return or Output 6
Ground All others
Single Ended Operation Return is ground
Differential Operation Return is hot
10-Terminal Ceramic Surface-Mount Case
7 x 5 mm Nominal Footprint
SMP-03 Case
Electrical Connections
Case Dimensions
H
C
D
P
B
A
E
10
1
9
8
7
6
2
3
4
5
2
3
4
9
7
9
8
7
9
7
6
5
1 10
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