SF2242B Datasheet, PDF (1/5 Pages) RF Monolithics, Inc – Compact 40 MHz SAW Filter Design

• Compact 40 MHz SAW Filter Design
• Hermetic 5 x 7 mm Surface-mount Case
• Complies with Directive 2002/95/EC (RoHS) _Pb
Absolute Maximum Ratings
Rating
Maximum Incident Power in Passband
DC Voltage on any Non-ground Terminal
Storage Temperature Range in Tape and Reel
Suitable for Lead-free Soldering - Maximum Soldering Profile
Value
Units
+10
dBm
5
VDC
-40 to +85
°C
260 °C for 30 s
SF2242B
40 MHz
SAW Filter
SMP-03
Electrical Characteristics
Characteristic
Center Frequency
Minimum insertion Loss
3 dB Bandwidth
Amplitude Ripple, (f_C - 1.75 MHz to f_C + 1.75 MHz)
Group Delay Ripple, (f_C - 1.75 MHz to f_C + 1.75 MHz)
Attenuation Relative to IL_MIN:
f_C - 5 MHz to f_C + 5 MHz
27.5 to 32.5 MHz
47.5 to 52.5 MHz
0 to 30.0 MHz
50.0 to 70.0 MHz
Operating Temperature Range
Sym Notes
Min
Typ
Max
Units
f_C
1
IL_MIN
1, 2
40
MHz
9.5
12.0
dB
3.5
5.0
MHz
1.4
2.0
dB_P-P
190
250
ns_P-P
20
26
31
40
dB
31
46
35
64
35
40
T_A
1
-20
+85
°C
Terminating Source Impedance (through matching network)
Terminating Source Impedance (through matching network)
Case Style
Lid Symbolization (YY = year, WW = week)
Z_S = 50 ohms
Z_L = 50 ohms
6
SMP-03 7 x 5 mm Nominal Footprint
RFM/SF2242B/YYWW
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. Unless noted otherwise, all frequency specifications are referenced to the nominal center frequency, fc.
3. 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. "LRIP" or "L" after the part number indicates "low rate initial production" and "ENG" or "E" indicates "engineering prototypes."
5. The design, manufacturing process, and specifications of this filter are subject to change.
6. Tape and Reel Standard ANSI / EIA 481.
7. 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.
9. Electrostatic Sensitive Device. Observe precautions for handling.
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© 2010-2011 by RF Monolithics, Inc.
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SF2242B - 10/28/11