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Preliminary
?
SF2140A
?
Excellent Size-to-Performance Ratio
?
?
Hermetic 13.3 X 6.5 mm Surface-Mount Case
Complies with Directive 2002/95/EC (RoHS)
Pb
140.0 MHz
SAW Filter
Absolute Maximum Ratings
Input Power Level
Storage Temperature Range
Operating Temperature Range
Rating
Value
+10
-40 to +85
-40 to +85
Units
dBm
°C
°C
Suitable for lead-free soldering - Max Soldering Profile
Electrical Characteristics
260°C for 30 s
SMP-53
Characteristic
Nominal Center Frequency
Maximum Insertion loss
Sym
f C
IL
Notes
1
Min
Typ
140.0
9.2
Max
10.5
Units
MHz
dB
1dB Bandwidth
3dB Bandwidth
18.4
20.0
20.8
21.8
MHz
MHz
35dB Bandwidth
Passband Ripple (within 130.9~149.1 MHz)
Group Delay Ripple (within 130.9~149.1 MHz)
Absolute Group Delay
Input VSWR (within 130.9~149.1 MHz)
Output VSWR (within 130.9~149.1 MHz)
Temp Coefficient
25.5
0.75
115
1.05
2.0
1.7
-93
26.4
1.0
150
2.5
2.3
MHz
dB
ns
μs
dB
dB
ppm/° C
Attenuation: (Reference level from minimum insertion loss)
10 ~ 90 MHz
190 ~ 120 MHz
120 ~ 126.8 MHz
154.7 ~ 160 MHz
160 ~ 190 MHz
190 ~ 800 MHz
35
40
35
35
40
35
62
54
42
45
43
62
dB
dB
dB
dB
dB
dB
Case Style
Lid Symbolization (YY=year, WW=week) See note 4
Notes:
SMP-53 13.3 X 6.5 mm Nominal Footprint
RFM SF2140A YYWWS##
1.
2.
3.
4.
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
6.
7.
8.
9.
10.
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.
"ENG" or "E" indicates "engineering prototypes."
5.
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
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SF2142G 功能描述:信号调节 867.5 MHz BW=25MHz RoHS:否 制造商:EPCOS 产品:Duplexers 频率:782 MHz, 751 MHz 频率范围: 电压额定值: 带宽: 阻抗:50 Ohms 端接类型:SMD/SMT 封装 / 箱体:2.5 mm x 2 mm 工作温度范围:- 30 C to + 85 C 封装:Reel
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