Preliminary SF2228A • Precision IF SAW Filter • Hermetic 13.3 x 6.5 mm Surface-mount Case • Complies with Directive 2002/95/EC (RoHS) 70 MHz SAW Filter Pb Absolute Maximum Ratings Rating Value Maximum Incident Power in Passband dBm 10 VDC -40 to +85 °C Maximum DC Voltage on any Non-ground Terminal Storage Temperature Range in Tape and Reel Units +20 Suitable for Lead-free Soldering - Maximum Soldering Profile 260 °C for 30 s SM13365-12 Electrical Characteristics Characteristic Sym Notes Min Typ Max Center Frequency fC 1 69.8 70.0 70.2 Units 1 dB Bandwidth BW1 1 3.40 3.60 3 dB Bandwidth BW3 1 4.00 4.45 40 dB Bandwidth BW40 1 7.18 IL 1 8.0 9.5 dB 0.9 1.0 dBP-P 190 220 nsP-P Insertion Loss Amplitude Ripple, fC ± 1.5 MHz Group Delay Ripple, fC ± 1.5 MHz 1, 2, 3 MHz 8.00 Relative Attenuation: 10 to 64.5 MHz 40 45 74 to 140 MHz 40 43 Operating Temperature Range 1 -40 Frequency Temperature Coefficient Lid Symbolization (YY = year, WW = week) +80 -94 Impedance Matching to 50 Ω Unbalanced Source/Load Case Style dB °C ppm/°C External L-C SM13365-12 13.3 x 6.5 mm Nominal Footprint RFM SF2228A 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] ©2010 by RF Monolithics, Inc. Page 1 of 5 SF2228A - 5/14/10 Filter Amplitude Response Plots www.RFM.com E-mail: [email protected] ©2010 by RF Monolithics, Inc. Page 2 of 5 SF2228A - 5/14/10 Tuning Component Values M a tc h in g C ir c u it 5 0 o h m s 2 2 0 n H 1 1 9 1 0 7 8 6 S F 2 2 2 8 A 1 2 1 2 3 4 5 1 0 0 n H 5 0 o h m s 2 2 p F PCB Pad Layout www.RFM.com E-mail: [email protected] ©2010 by RF Monolithics, Inc. Page 3 of 5 SF2228A - 5/14/10 SM13365-12 Ceramic Surface-mount 12-Terminal 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 13.10 6.30 13.30 6.50 13.50 6.70 1.80 0.516 0.248 0.524 0.256 0.531 0.264 0.071 1.50 0.80 0.80 2.54 0.059 0.031 0.031 0.100 Case Material Electrical Connections Connection Materials Terminals Input 11 Output 5 Case Ground Solder Pad Plating All others 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 Case Outline Drawing 1 2 B H 1 1 C 1 1 1 1 0 1 2 D 1 1 0 P 2 9 2 9 A 3 8 4 7 5 T O P V IE W www.RFM.com E-mail: [email protected] ©2010 by RF Monolithics, Inc. 6 3 8 E 4 7 6 B O T T O M 5 V IE W Page 4 of 5 SF2228A - 5/14/10 Tape and Reel Details www.RFM.com E-mail: [email protected] ©2010 by RF Monolithics, Inc. Page 5 of 5 SF2228A - 5/14/10