SF2157A • • • • Designed for WiMax Applications Low Insertion Loss IF Filter Hermetic 13.3 x 6.5 mm Surface-mount Case Complies with Directive 2002/95/EC (RoHS) 156 MHz SAW Filter Pb Absolute Maximum Ratings Rating Value Maximum Incident Power in Passband dBm 30 VDC -50 to +125 °C Maximum DC Voltage Between any Two Terminals Storage Temperature Range Units +10 Suitable for Lead-free Soldering - Maximum Soldering Profile 260 °C for 30 s SM13365-12 Electrical Characteristics Characteristic Sym Notes fC 1 156 MHz 1 dB Bandwidth BW1 1 20.0 22.0 MHz 3 dB Bandwidth BW3 1 21.0 24.0 40 dB Bandwidth BW40 1 27 30 MHz IL 1 10.0 12.0 dB Center Frequency Insertion Loss Min Typ Max Units MHz Attenuation Relative to IL 0 to123 MHz 1, 2, 3 190 to 1000 MHz 45 50 45 50 Passband Ripple, 146 to 166 MHz Absolute Group Delay, 156 MHz 1, 2, 3 Group Delay Ripple, 146 to 166 MHz Operating Temperature Range dBP-P µs 100 nsP-P +85 50 VSWR to Source through Matching Network 1.4:1 Load Impedance 1.4:1 Frequency Temperature Coefficient 2:1 ohm 2:1 -94 Impedance Matching to 50 Ω Unbalanced °C ohm 50 VSWR to Load through Matching Network Lid Symbolization (YY = year, WW = week) 1.8 1.50 -40 Source Impedance Case Style 1.0 1.13 30 1 dB ppm/K External L-C SM13365-12 13.3 x 6.5 mm Nominal Footprint RFM SF2157A YYWW CAUTION: Electrostatic Sensitive Device. Observe precautions for handling. Notes: 1. 2. 3. 4. 5. 6. 7. 8. Unless noted otherwise, all specifications apply over the operating temperature range with filter soldered to the specified demonstration board with impedance matching to 50 Ω and measured with 50 Ω network analyzer. Unless noted otherwise, all frequency specifications are referenced to the nominal center frequency, fc. 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. Part to part absolute delay measurement records the absolute delay mean across 1 dB passband. "LRIP" or "L" after the part number indicates "low rate initial production" and "ENG" or "E" indicates "engineering prototypes.” The design, manufacturing process, and specifications of this filter are subject to change. 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. US and international patents may apply. www.RFM.com E-mail: [email protected] ©2009 by RF Monolithics, Inc. Page 1 of 5 SF2157A - 7/10/09 S11, S22 and S21 Filter Plots 10 Jul 2009 10:39:53 CH1 S 11 1 U FS 3 . 128 9 1 : 43 . 27 5 1 56 . 0 00 00 0 MHz sf21 57 A 3 . 19 22 CH3 S2 2 1 : 4 4 . 238 1 56 . 00 0 0 00 nH 1 U FS 1 0 . 535 M Hz 10 . 74 8 nH 1 d B BW 1 1 Cor Co r Full CENTR CH2 15 6 . 000 S2 1 MHz LO G SPA N 2 00 10 dB/ . 00 0 MHz CE NTR RE F -1 0.4 8 d B 156 . 0 00 1 : 0 . 0 000 MHz dB S PAN 0 . 00 0 2 00 . 000 000 MHz MHz 1 3 2 CH2 Ma x 4 B W: Cor Full ce nt : Ma rke rs REF=1 22 . 54 85 81 156 . 0 12 593 MHz MHz Q : 6 . 91 90 1_ loss S TA RT www.RFM.com E-mail: [email protected] ©2009 by RF Monolithics, Inc. 56 . 0 00 00 0 MHz S TO P 2 56 . 00 0 0 00 : -9 . 979 2 dB MHz Page 2 of 5 SF2157A - 7/10/09 Filter Passband VSWR 10 Jul 20 09 10:38:25 CH1 S1 1 SW R 1 / 4 : 2 . 653 0 REF -1 17 6 . 000 000 MHz SF2 157A VSWR CH1 Markers 1 : 1 . 1732 156 . 0 00 MHz C 2 : 1 . 2604 166 . 0 00 MHz 4 3 : 1 . 2529 146 . 0 00 MHz Full 3 CH3 S2 2 SW R 1 / 2 1 4 : 2 . 803 5 REF -2 17 6 . 000 000 MHz CH3 Markers 1 : 1 . 2930 156 . 0 00 MHz C 4 2 : 1 . 0149 166 . 0 00 MHz 3 : 1 . 4610 146 . 0 00 MHz 3 CENTER www.RFM.com E-mail: [email protected] ©2009 by RF Monolithics, Inc. 156 . 0 00 000 1 MHz 2 SPA N 4 0 . 000 0 00 MHz Page 3 of 5 SF2157A - 7/10/09 Filter Amplitude and Group Delay Ripple 10 Jul 2009 10:45:36 CH1 S2 1 LOG 1 d B/ REF -1 0.4 2 d B 3 : . 326 40 dB -20 . 00 0 0 00 M Hz SF2 157A ripple CH1 me an : -1 0 Marke rs REF=2 . 3 53 dB 3 C s . de v : . 19 270 dB p-p : . 7 17 70 dB 2 1 Full CH3 S2 1 DEL 1 00 ns/ REF 1.1 84 us 3 : -12 . 97 0 ns -20 . 00 0 0 00 M Hz CH3 Sm o C 3 mea n : 1 . 2027 s . de v : 4 . 4047 ns : 26 . 24 5 ns p-p 1 CENTER 1 56 . 00 0 000 Marke rs REF=2 us 2 M Hz SP AN 40 . 00 0 000 M Hz S F 2 1 5 7 A D e m o n s tr a tio n C ir c u it L 1 5 0 o h m s 5 6 n H C 1 1 1 1 1 2 2 1 0 9 S F 2 1 5 7 A 2 7 p F 3 L 2 4 5 8 6 7 5 6 n H 5 0 o h m s C 2 2 7 p F www.RFM.com E-mail: [email protected] ©2009 by RF Monolithics, Inc. C 3 2 .0 p F Page 4 of 5 SF2157A - 7/10/09 SM13365-12 Case 12-Terminal Ceramic Surface-Mount Case 13.3 x 6.5 mm Nominal Footprint Case Dimensions mm Dimension A B C D E H P Inches Min Nom Max Min Nom Max 13.08 6.27 13.31 6.50 1.91 1.50 0.79 1.0 2.54 13.60 6.80 2.00 0.515 0.247 0.524 0.256 0.075 0.059 0.031 0.039 0.100 0.535 0.268 0.079 Electrical Connections Connection Terminals Input 11 Output 5 Case Ground All others Materials Solder Pad Plating 0.3 to 1.0 µm Gold over 1.27 to 8.89 µm Nickel Lid Plating 2.0 to 3.0 µm Nickel Body Al2O3 Ceramic Pb Free www.RFM.com E-mail: [email protected] ©2009 by RF Monolithics, Inc. Page 5 of 5 SF2157A - 7/10/09