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SF1083B 286 MHz SAW Filter
* * * *
Designed for GSM BTS Transmitter Applications Low Insertion Loss and Small Size 8.5 x 5.8 mm Surface-Mount Case Unbalanced Input and Output
Characteristic Nominal Center Frequency Passband
Insertion Loss at fc 3 dB Passband Amplitude Ripple over fc 75 kHz Group Delay Variation over fc 75 kHz Rejection 100 kHz to fc-6.0 MHz and fc+6.0 to 540 MHz Ultimate Operating Temperature Range Impedance Matching to 50 unbalanced Case Style Lid Symbolization (YY=year, WW=week, XXX=lot code) Absolute Maximum Ratings Rating Maximum Incident Power in Passband Max. DC voltage between any 2 terminals Storage Temperature Range Max Soldering Profile
Sym fc IL BW3 GDV
Min
Typ 286.000 6
Max 8.0 0.3 100
275
20 TA -40
40 >40 +85
Units MHz dB kHz dBP-P nsP-P dB C
Notes 1 1, 2
1, 2, 3 1
External L-C SM8558-8 8.5 x 5.8 mm Nominal Footprint RFM SF1083B YYWWXXX Electrical Connections Connection Terminals Port 1 Hot 7 Port 1 Gnd Return 1 Port 2 Hot 3 Port 2 Gnd Return 5 Case Ground All Others
Value Units +10 dBm 30 VDC -40 to +85 C 235C for 90 s
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 and measured with 50 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 filter must always be installed in one direction per the circuit design. 7. US and international patents may apply. 8. RFM, stylized RFM logo, and RF Monolithics, Inc. are registered trademarks of RF Monolithics, Inc. 9. (c)Copyright 1999, RF Monolithics Inc. 10. Electrostatic Sensitive Device. Observe precautions for handling.
RF Monolithics, Inc.
4347 Sigma Road Dallas, Texas 75244 USA
Phone: +1(972)233-2903 Fax: +1(972)387-8148 e-mail: info@rfm.com Home page: www.rfm.com
European Sales Office
44 1963 251383 44 1963 251510
SF1083B 7/22/1999 R
SF1083B 286 MHz SAW Filter
0 dB -20
-40
-60
-80
-100 20 MHz/DIV 0 dB -2
-6
-8
-10 400 kHz/DIV
RF Monolithics, Inc.
4347 Sigma Road Dallas, Texas 75244 USA
Phone: +1(972)233-2903 Fax: +1(972)387-8148 e-mail: info@rfm.com Home page: www.rfm.com
European Sales Office
44 1963 251383 44 1963 251510
SF1083Bp.DOC
50 ns/DIV
-4
SM8558-8 Case
8-Terminal Ceramic Surface-Mount Case 8.5 x 5.8 mm Nominal Footprint
Dimension A B C D E F H M N P R
Min 8.26 5.59
mm Nom 8.51 5.84 1.70 0.79 1.14 1.98 0.51 0.76 0.51 2.54 0.51
Max 8.76 6.10 2.00
Min 0.325 0.220
Inches Nom 0.335 0.230 0.067 0.031 0.045 0.078 0.020 0.030 0.020 0.100 0.020
Max 0.345 0.240 0.079
B
C
D (X8)
4 E (X2) 3 5
A
2
6 P (X4)
1 M N8 H Radius R
7
F (X6)
RF Monolithics, Inc. Phone: +1(972) 233-2903 Fax: +1(972) 387-8148 RFM Europe Phone: 44 1963 251383 Fax: 44 1963 251510 (c)1999 by RF Monolithics, Inc. The stylized RFM logo and RFM are registered trademarks of RF Monolithics, Inc.
E-mail: info@rfm.com http://www.rfm.com
SM8558-8

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