RFM products are now Murata products. SF1189B-1 Designed for WLAN IF Applications Low Insertion Loss 5.0 x 5.0 x 1.7 mm Suface-mount Case 280.00 MHz Single-ended Input Single-ended or Differential Output SAW Filter Pb Complies with Directive 2002/95/EC (RoHS) Absolute Maximum Ratings Rating Value Units Maximum Incident Power in Passband +10 dBm Maximum DC Voltage on any Non-ground Terminal 0 VDC Storage Temperature Range -40 to +85 C Suitable for Lead-free Soldering - Maximum Soldering Profile 260C for 30 s SM5050-8 Electrical Characteristics Characteristic Sym Notes Min Typ Max Units Nominal Center Frequency f 280.0 MHz C 1 Passband Insertion Loss at fc IL 8.3 10 dB 3 dB Bandwidth BW 18.5 19.8 MHz 3 1, 2 Amplitude Ripple, fc 9.0 MHz 2.0 3.0 dB P-P Group Delay Variation, fc 9.0 GDV 60 125 ns P-P Rejection fc -60 to fc -40 MHz 40 46 1, 2, 3 fc -40 to fc -22 MHz 37 39 fc -22 to fc -16 MHz 30 39 dB fc +16 to fc +22 MHz 25 33 fc +22 to fc +40 MHz 34 36 fc +40 to fc +60 MHz 40 45 T Operating Temperature Range 1-10 +85 C A Differential Input / Output Impedance Match External L-C Case Style SM5050-8 5 X 5 mm Nominal Footprint Lid Symbolization (YY=year, WW=week, S=shift) 457, YYWWS Electrical Connections Connection Terminals Port 1 Single-ended Input 3 Single-ended Ouput 7 Port 2 Differential Output 6,7 Ground All others 2010-2014 by Murata Electronics N.A., Inc. SF1189B-1 (R) 3/21/14 Page 1 of 5 www.murata.comCAUTION: Electrostatic Sensitive Device. Observe precautions for handling. NOTES: 1. Unless noted otherwise, all specifications apply over the operating tem- andEN or indicatesengineering prototypes perature range with filter soldered to the specified demonstration board 5. The design, manufacturing process, and specifications of this filter are with impedance matching to 50 and measured with 50 network ana- subject to change. lyzer. 6. Either Port 1 or Port 2 may be used for either input or output in the design. 2. Unless noted otherwise, all frequency specifications are referenced to the However, impedances and impedance matching may vary between Port 1 nominal center frequency, fc. and Port 2, so that the filter must always be installed in one direction per 3. Rejection is measured as attenuation below the minimum IL point in the the circuit design. passband. Rejection in final user application is dependent on PCB layout 7. US and international patents may apply. and external impedance matching design. See Application Note No. 42 8. Murata, stylized Murata logo, and Murata N.A., Inc. are registered for details. trademarks of Murata Manufacturing Co., Ltd. 4.LRI or after the part number indicateslow rate initial productio Amplitude Response Note: Insertion loss of balun transformer -0.7 dB Fig-1 S21 Response 2010-2014 by Murata Electronics N.A., Inc. www.murata.com SF1189B-1 (R) 3/21/14 Page 2 of 5