Preliminary
SF2270A
• Precision SAW IF Filter
• Hermetic 13.3 x 6.5 mm Surface-mount Case
• Complies with Directive 2002/95/EC (RoHS)
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
Pb
70 MHz
SAW Filter
Units
dBm
VDC
°C
Value
+20
3
-40 to +85
260 °C for 30 s
Case
Electrical Characteristics
Characteristic
Center Frequency
Insertion Loss
1 dB Bandwidth
3 dB Bandwidth
35 dB Bandwidth
Amplitude Ripple, f
C
± 0.92 MHz
RMS Phase Linearity, f
C
±1.2 MHz
Group Delay Ripple, f
C
±1.2 MHz
Absolute Delay
Attenuation Referenced to IL:
10 to 66 MHz
74 to 140 MHz
Operating Temperature Range
Impedance Matching to 50
Ω
Unbalanced Source/Load
Case Style
Lid Symbolization (YY = year, WW = week)
1
40
40
-10
External L-C
13.3 x 6.5 mm Nominal Footprint
RFM/SF2270A/YYWW
45
45
+70
°C
dB
Sym
f
C
IL
BW
1
BW
3
BW
35
Notes
1
1
1
1
1
1, 2, 3
Min
69.85
2.30
3.00
Typ
70.00
7.5
2.63
3.55
6.0
0.75
2.2
155
1.07
Max
70.15
8.2
Units
MHz
dB
MHz
MHz
7.5
1.00
5.0
190
MHz
dB
P-P
ns
ns
P-P
µs
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
© 2011 by RF Monolithics, Inc.
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SF2270A - 5/9/11
RFM [ RF MONOLITHICS, INC ]
