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參數(shù)資料
| 型號： | SF1145B |
| 廠商： | RF Monolithics, Inc. |
| 英文描述： | 427.250 MHz SAW Filter |
| 中文描述： | 427.250兆赫SAW濾波器 |
| 文件頁數(shù)： | 1/6頁 |
| 文件大?。?/td> | 245K |
| 代理商： | SF1145B |
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
SF1145B-121604
Page 1 of 3
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.
Unless noted otherwise, all frequency specifications are referenced to the nominal center frequency, fc.
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.
"LRIP" or "L" after the part number indicates "low rate initial production" and "ENG" or "E" indicates "engineering prototypes."
The design, manufacturing process, and specifications of this filter are subject to change.
Tape and Reel Standard ANSI / EIA 481.
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.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
Electrical Characteristics
Characteristic
Sym
f
C
IL
BW
1
Notes
Min
Typ
Max
Units
MHz
dB
kHz
MHz
ns
P-P
Nominal Center Frequency
Passband
1
427.250
Insertion Loss at fc
1.5 dB Passband
4.0 dB Passband
3.5
1, 2
±15
30
Group Delay Variation over fc ±250 kHz
GDV
177
250
Rejection (referenced to fc=427.250 MHz)
fc±1.5 MHz
fc±6.0 MHz
fc±50 MHz
1, 2, 3
5
20
50
-40
dB
Operating Temperature Range
Differential Input and Output Impedance after matching
Case Style
Lid Symbolization (YY=year, WW=week, S=shift) See note 4
T
A
1
+85
°C
50 ohms
SMP-03 7 x 5 mm Nominal Footprint
RFM SF1145B YYWWS
6
SMP-03
Low Insertion Loss
5.0 X 7.0 mm Surface-Mount Case
Complies with Directive 2002/95/EC (RoHS)
Absolute Maximum Ratings
Rating
Value
+10
30
-40 to +85
Units
dBm
VDC
°C
Maximum Incident Power in Passband
Max. DC voltage between any 2 terminals
Storage Temperature Range
Suitable for lead-free soldering - Max Soldering Profile
260°C for 30 s
427.250 MHz
SAW Filter
SF1145B
Connection
Port 1 Hot
Port 1 Ground Return
Port 2 Hot
Port 2 Ground Return
Case Ground
Terminals
10
1
5
6
All Others
Electrical Connections
Pb
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