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SF1091A (R) 3/18/14 Page 1 of 4
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Electrical Specification
Characteristic Sym Notes Min Typ Max Units
Nominal Center Frequency
f
C
1 211.000
MHz
Passband Insertion Loss at fc
IL
78.0dB
3 dB Passband
BW
3
1, 2
±450 ±500 kHz
Group Delay Variation over fc ±150 kHz
GDV 200 250
ns
P-P
Rejection fc-2.0 to fc-1.05 and fc+1.05 to fc+2.0 MHz
1, 2, 3
10 21
dB
fc-80 to fc-2.0 and fc+2.0 to fc+80 MHz 30 33
n x fc over 291 to 2000 MHz 40 60
Operating Temperature Range
T
A
1-10
+85 °C
Frequency Temperature Coefficient FTC
1
0.32
ppm/°C
2
Impedance Matching to 50 Ω unbalanced External L-C
Case Style SM13365-12 13.3 x 6.5 mm Nominal Footprint
Lid Symbolization (XX = 2 character date code) RFM SF1091A XX
SM13365-12
• Designed for GSM BTS Transmitter Applications
• Low Insertion Loss
• Excellent Size-to-Performance Ratio
• Hermetic 13.3 X 6.5 mm Surface-Mount Case
• Unbalanced Input and Output
• 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
211 MHz
SAW Filter
SF1091A
1. Unless noted otherwise, all specification apply over the operating temperature range with filter soldered to the specified demonstration board with
impedance matching to 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 oon PCB layout
and external impedance matching design. See Application Note No. 42 for details.
4. The turnover temperature, T
O
, is the temperature of maximum (or turnover) frequency, f
o
. The nominal frequency at any case temperature, T
c
, may
be calculated from: f=f
o
[1-FTC(T
o
-T
c
)
2
].
5. The design, manufacturing process, and specifications of this filter are subject to change.
6. 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.
7. US and international patents may apply.
Pb
CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.
NOTES:
Copyright © Murata Manufacturing Co., Ltd. All Rights Reserved 2005
