Preliminary
®
SF2140A
•
•
•
Excellent Size-to-Performance Ratio
Hermetic 13.3 X 6.5 mm Surface-Mount Case
Complies with Directive 2002/95/EC (RoHS)
140.0 MHz
SAW Filter
Pb
Absolute Maximum Ratings
Rating
Value
+10
Units
dBm
°C
Input Power Level
Storage Temperature Range
-40 to +85
-40 to +85
Operating Temperature Range
Suitable for lead-free soldering - Max Soldering Profile
°C
SMP-53
260°C for 30 s
Electrical Characteristics
Characteristic
Sym
Notes
Min
Typ
Max
Units
f
140.0
Nominal Center Frequency
1
MHz
dB
C
Maximum Insertion loss
1dB Bandwidth
9.2
10.5
IL
18.4
20.0
20.8
21.8
25.5
0.75
115
1.05
2.0
MHz
MHz
MHz
dB
3dB Bandwidth
35dB Bandwidth
26.4
1.0
Passband Ripple (within 130.9~149.1 MHz)
Group Delay Ripple (within 130.9~149.1 MHz)
Absolute Group Delay
150
ns
µs
dB
Input VSWR (within 130.9~149.1 MHz)
Output VSWR (within 130.9~149.1 MHz)
Temp Coefficient
2.5
2.3
dB
1.7
ppm/° C
-93
Attenuation: (Reference level from minimum insertion loss)
10 ~ 90 MHz
dB
dB
dB
dB
dB
dB
62
54
42
45
43
62
35
40
35
35
40
35
190 ~ 120 MHz
120 ~ 126.8 MHz
154.7 ~ 160 MHz
160 ~ 190 MHz
190 ~ 800 MHz
Case Style
SMP-53 13.3 X 6.5 mm Nominal Footprint
RFM SF2140A YYWWS##
Lid Symbolization (YY=year, WW=week) See note 4
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 W and measured with 50 W 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."
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.
US and international patents may apply.
RFM, stylized RFM logo, and RF Monolithics, Inc. are registered trademarks of
RF Monolithics, Inc.
2.
3.
7.
8.
9.
©Copyright 1999, RF Monolithics Inc.
4.
5.
10. Electrostatic Sensitive Device. Observe precautions for handling.
The design, manufacturing process, and specifications of this filter are subject
to change.
RF Monolithics, Inc.
RFM Europe
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
©1999 by RF Monolithics, Inc. The stylized RFM logo are registered trademarks of RF Monolithics, Inc.
SF2140A-1/31/08
RFM [ RF MONOLITHICS, INC ]
