Preliminary
SF2227A
• Precision IF SAW Filter
• Hermetic 13.3 x 6.5 mm Surface-mount Case
• Complies with Directive 2002/95/EC (RoHS)
Pb
70 MHz
SAW Filter
Value
+20
30
-40 to +85
Absolute Maximum Ratings
Rating
Maximum Incident Power in Passband
Maximum DC Voltage on any Non-ground Terminal
Storage Temperature Range in Tape and Reel
Suitable for Lead-free Soldering - Maximum Soldering Profile
Units
dBm
VDC
°C
260 °C for 30 s
SM13365-12
Electrical Characteristics
Characteristic
Center Frequency
1 dB Bandwidth
3 dB Bandwidth
40 dB Bandwidth
Insertion Loss
Amplitude Ripple, f
C
± 2.1 MHz
Group Delay Ripple, f
C
± 2.1 MHz
Relative Attenuation:
10 to 64.5 MHz
75.5 to 140 MHz
Operating Temperature Range
Frequency Temperature Coefficient
Impedance Matching to 50
Ω
Unbalanced
Case Style
Lid Symbolization (YY = year, WW = week)
1
40
40
-30
-94
External L-C
SM13365-12 13.3 x 6.5 mm Nominal Footprint
RFM SF2227A YYWW
45
43
+80
°C
ppm/°C
dB
Sym
f
C
BW
1
BW
3
BW
40
IL
Notes
1
1
1
1
1
1, 2, 3
Min
69.8
5.2
6.0
Typ
70.0
5.4
6.5
9.5
7.6
0.8
140
Max
70.2
Units
MHz
10
9.0
1.0
170
dB
dB
P-P
ns
P-P
CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.
Notes:
1.
2.
3.
4.
5.
6.
7.
8.
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.
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.
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.
US and international patents may apply.
www.RFM.com E-mail: info@rfm.com
©2008-2010 by RF Monolithics, Inc.
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SF2227A - 5/14/10
RFM [ RF MONOLITHICS, INC ]
