SF1087A Datasheet, PDF (1/3 Pages) RF Monolithics, Inc – 208 MHz SAW Filter

• 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
f_C
IL
Notes
1
Min
Typ
Max
208.000
5
7.0
Units
MHz
dB
1 dB Passband BW₁
1, 2
Amplitude Ripple over fc±150 kHz
Group Delay Variation over fc ±150 kHz GDV
Absolute Group Delay GD
±150
0.7
±260
<100
1.0
1.25
150
1.7
kHz
dB_P-P
ns_P-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
T_A
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: [phone]
Fax: [phone]
RFM Europe
Phone: [phone]
Fax: [phone]
©2001 by RF Monolithics, Inc. The stylized RFM logo are registered trademarks of RF Monolithics, Inc.
E-mail: [e-mail]
http://www.rfm.com
SF1087A-051705
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