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PDF SF1087A Data sheet ( Hoja de datos )
| Número de pieza | SF1087A | |
| Descripción | 208 MHz SAW Filter | |
| Fabricantes | RFM | |
| Logotipo |  |
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• Designed for GSM BTS Transmitter IF 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) Pb
SF1087A
208 MHz
SAW Filter
Absolute Maximum Ratings
Rating
Maximum Incident Power in Passband
Max. DC voltage between any 2 terminals
Storage Temperature Range
Suitable for lead-free soldering - Max. Soldering Profile
Value
Units
+10 dBm
30 VDC
-40 to +85
°C
260°C for 30 s
SM13365-12
Electrical Characteristics
Characteristic
Nominal Center Frequency
Passband
Insertion Loss at fc
Sym
fC
IL
Notes
1
Min Typ Max
208.000
5 7.0
Units
MHz
dB
1 dB Passband
Amplitude Ripple over fc±150 kHz
Group Delay Variation over fc ±150 kHz
Absolute Group Delay
BW1
GDV
GD
1, 2
±150
0.7
±260
<100
1.0
1.25
150
1.7
kHz
dBP-P
nsP-P
µs
Rejection
fc-0.6 to fc-0.4 and fc+0.4 to fc+0.6 MHz
1, 2, 3
2
dB
fc-1.2 to fc-0.6 and fc+0.6 to fc+1.2 MHz
8
fc-1.8 to fc-1.2 and fc+1.2 to fc+1.8 MHz
20 22
fc-3.4 to fc-1.8 and fc+1.8 to fc+3.4 MHz
25 36
fc-9.5 to fc-3.4 and fc+3.4 to fc+9.5 MHz
30 47
fc-13 to fc-9.5 and fc+9.5 to fc+13 MHz
43 64
DC to fc-13 and fc+13 to 450 MHz
55 65
Except Spurious Rejection near 1.6, 1.8, and 2.0 x fc
50
Operating Temperature Range
TA 1
-10
+85 °C
Impedance Matching to 50 Ω unbalanced
Case Style
Lid Symbolization (YY = year, WW = week)
External L-C
SM13365-12 13.3 x 6.5 mm Nominal Footprint
RFM SF1087A 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 W
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. 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 fil-
ter must always be installed in one direction per the circuit design.
7. US and international patents may apply.
8. Electrostatic Sensitive Device. Observe precautions for handling.
Electrical Connections
Connection
Port 1 Hot
Port 1 Gnd Return
Port 2 Hot
Port 2 Gnd Return
Case Ground
Terminals
2
3
8
9
All others
RF Monolithics, Inc. Phone: (972) 233-2903
Fax: (972) 387-9148
RFM Europe
Phone: 44 1963 251383
Fax: 44 1963 251510
©2001 by RF Monolithics, Inc. The stylized RFM logo are registered trademarks of RF Monolithics, Inc.
E-mail: [email protected]
http://www.rfm.com
SF1087A-051705
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