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SF1120B (R) 3/18/14 Page 1 of 4
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Electrical Characteristics
Characteristic Sym Notes Min Typ Max Units
Nominal Center Frequency
f
C
1
298.740 MHz
Passband Insertion Loss at fc
IL
12.0 dB
1 db Passband
BW
1
1, 2
±750
kHz
3 db Passband
BW
3
±1100 ±1150 ±1300
Amplitude Ripple over fc±1.0 MHz 1.0
dB
P-P
Group Delay Variation over fc ±1.0 MHz GDV 250
ns
P-P
Rejection fc-25 to fc-5.0 and fc+5.0 to fc+25 MHz 1, 2, 3 dB
Operating Temperature Range
T
A
1-20
+75 °C
SMP-03
• Designed for GPS Applications
• Quartz Temperature Stability
•Small Size
• Hermetic 7 x 5 mm Surface-mount Case
• Complies with Directive 2002/95/EC (RoHS)
Absolute Maximum Ratings
Rating Value Units
Maximum Incident Power in Passband +10 dBm
Max. DC voltage between any 2 terminals 30 VDC
Storage Temperature Range -40 to +85 °C
Suitable for lead-free soldering - Max. Soldering Profile 260°C for 30 s
298.74 MHz
SAW Filter
SF1120B
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.
Electrical Connections
Connection Terminals
Port 1 1, 10
Port 2 5, 6
Case Ground All others
Matching to Unbalanced Impedance External L-C to 1kΩ (Port 1) and 200 Ω (Port 2)
Case Style
6
SMP-03 7 x 5 mm Nominal Footprint
Lid Symbolization (YY = year, WW = week) RFM SF1120B YYWW
Pb
CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.
NOTES:
