SF2227A [RFM]
Precision IF SAW Filter; 精密IF SAW滤波器
| 型号： | SF2227A |
| 厂家： | 
RF MONOLITHICS, INC |
| 描述： | Precision IF SAW Filter |
| 文件： | 总5页 (文件大小：542K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Preliminary
SF2227A
• Precision IF SAW Filter
• Hermetic 13.3 x 6.5 mm Surface-mount Case
• Complies with Directive 2002/95/EC (RoHS)
70 MHz
Pb
SAW Filter
Absolute Maximum Ratings
Rating
Value
+20
Units
dBm
VDC
°C
Maximum Incident Power in Passband
Maximum DC Voltage on any Non-ground Terminal
Storage Temperature Range in Tape and Reel
30
-40 to +85
Suitable for Lead-free Soldering - Maximum Soldering Profile
260 °C for 30 s
SM13365-12
Electrical Characteristics
Characteristic
Center Frequency
1 dB Bandwidth
3 dB Bandwidth
40 dB Bandwidth
Insertion Loss
Sym
Notes
Min
69.8
5.2
Typ
70.0
5.4
Max
Units
f
1
1
1
1
1
70.2
C
BW
1
MHz
dB
BW
6.0
6.5
3
BW
9.5
10
9.0
1.0
170
40
IL
7.6
Amplitude Ripple, f ± 2.1 MHz
dB
0.8
C
P-P
1, 2, 3
Group Delay Ripple, f ± 2.1 MHz
ns
140
C
P-P
Relative Attenuation:
10 to 64.5 MHz
40
40
45
43
dB
75.5 to 140 MHz
Operating Temperature Range
Frequency Temperature Coefficient
1
-30
+80
°C
-94
ppm/°C
Impedance Matching to 50 Ω Unbalanced
Case Style
External L-C
SM13365-12 13.3 x 6.5 mm Nominal Footprint
RFM SF2227A YYWW
Lid Symbolization (YY = year, WW = week)
CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.
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 Ω and measured with 50 Ω network analyzer.
2.
3.
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.
4.
5.
6.
7.
Part to part absolute delay measurement records the absolute delay mean across 1 dB passband.
"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.
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.
8.
US and international patents may apply.
www.RFM.com E-mail: info@rfm.com
©2008-2010 by RF Monolithics, Inc.
Page 1 of 5
SF2227A - 5/14/10
Filter Response Plots
www.RFM.com E-mail: info@rfm.com
©2008-2010 by RF Monolithics, Inc.
Page 2 of 5
SF2227A - 5/14/10
Tuning Component Values
M
a
t
c
h
i
n
g
C
i
r
c
u
i
t
1
0
9
7
8
5
0
o
h
m
s
1
1
6
2
2
0
n
H
S
F
2
2
2
7
A
5
1
2
5
0
o
h
m
s
1
2
3
4
1
5
0
n
H
5
p
F
PCB Pad Layout
www.RFM.com E-mail: info@rfm.com
©2008-2010 by RF Monolithics, Inc.
Page 3 of 5
SF2227A - 5/14/10
SM13365-12 Ceramic Surface-mount 12-Terminal Case
13.3 x 6.5 mm Nominal Footprint
Case Dimensions
mm
Inches
Dimension
Min
13.10
6.30
Nom
13.30
6.50
Max
13.50
6.70
Min
0.516
0.248
Nom
0.524
0.256
Max
0.531
0.264
0.071
A
B
C
D
E
H
P
1.80
1.50
0.80
0.80
2.54
0.059
0.031
0.031
0.100
Case Material
Electrical Connections
Connection
Input
Materials
Terminals
Solder Pad
Plating
11
5
0.3 to 1.0 µm Gold over 1.27 to 8.89 µm Nickel
Output
Lid Plating
Body
2.0 to 3.0 µm Nickel
Al O Ceramic
Case Ground
All others
2
3
Pb Free
Case Outline Drawing
H
D
B
C
1
2
1
1
1
1
1
2
1
1
1
0
1
0
P
2
9
2
9
A
3
8
8
3
E
4
4
7
7
5
6
6
5
B
O
T
T
O
M
V
I
E
W
T
O
P
V
I
E
W
www.RFM.com E-mail: info@rfm.com
©2008-2010 by RF Monolithics, Inc.
Page 4 of 5
SF2227A - 5/14/10
Tape and Reel Details
www.RFM.com E-mail: info@rfm.com
©2008-2010 by RF Monolithics, Inc.
Page 5 of 5
SF2227A - 5/14/10
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