Preliminary SF2218D • • • • Low Insertion Loss 3.8 X 3.8 mm Surface-mount Case Single-ended Input and Differential Output Complies with Directive 2002/95/EC (RoHS) 425 MHz SAW Filter Pb Absolute Maximum Ratings Rating Maximum Incident Power in Passband Maximum DC Voltage on any Non-ground Terminal Storage Temperature Range in Tape and Reel Suitable for Lead-free Soldering - Maximum Soldering Temperature Value Units +10 dBm 3 VDC -40 to +85 °C 260°C for 30 s SM3838-8 Electrical Characteristics Characteristic Nominal Center Frequency Insertion Loss, 425 MHz 3 dB Bandwidth Passband Amplitude Ripple, 420 to 430 MHz Attenuation Referenced to 0 dB: 275 to 300 MHz 299 to 335 MHz 334 to 360 MHz 359 to 385 MHz 386 to 400 MHz 400 to 410 MHz 455 to 484 MHz 485 to 494 MHz 495 to 575 MHz Single-ended Source Impedance Balanced Load Impedance Operating Temperature Range Case Style Lid Symbolization (Y=year, WW=week, S=shift) Sym Notes fC IL BW3dB 1 1 Min Typ Max 425 5.0 10 1 2 2 2 2 2 2 2 2 2 19 1.0 2.1 45 40 45 35 20 40 20 35 40 Units MHz dB MHz dBP-P dB 50 100 -20 +70 SM3838-8 3.8 x 3.8 mm Nominal Footprint RFM 956 YWWS ohm ohm °C CAUTION: Electrostatic Sensitive Device. Observe precautions for handling. Notes: 1. 2. 3. 4. 5. 6. 7. 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. Rejection is measured as attenuation referenced to 0 dB. Rejection in final user application is dependent on PCB layout and external impedance matching design. See Application Note No. 42 for details. The design, manufacturing process, and specifications of this filter are subject to change. Tape and Reel Standard ANSI / EIA 481. 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. RFM, stylized RFM logo, and RF Monolithics, Inc. are registered trademarks of RF Monolithics, Inc. www.RFM.com E-mail: [email protected] ©2010 by RF Monolithics, Inc. Page 1 of 4 SF2218D - 7/27/10 SF2218D Frequency Response 22 Jul 2010 10:06:01 CH1 S2 1 LOG 3 : - . 53720 1 dB/ dB REF -3. 283 dB 10 . 0 00 0 00 CH3 S21 MHz LOG 1 : 0 . 0000 1 dB/ dB REF 0 dB 0 . 0 00 0 00 MHz SF2218D NEW DESIGN CH1 TEST FIXTURE m ean Markers REF=2 : -3 . 71 04 dB : . 25 930 dB s . de v CH3 Markers REF=1 19 . 308118 MHz BW : cent : 426 . 764962 MHz 1 p-p 3 : 1 . 090 7 dB Q : 22 . 1 03 2 1_ loss 2 1 Cor : -3 . 9080 dB Cor Resp 3 CENTR CH2 42 5 . 000 S21 MHz SP AN LOG 30 . 0 00 10 dB/ MHz CENTR REF -1.743 dB 4 425 . 000 5 : -49 . 2 79 MHz dB SPAN 500 30 . 000 . 000 000 MHz MHz CH2 Markers 1 : -49 . 021 dB 3 50 . 000 MHz Cor Resp 2 : -44 . 140 3 95 . 005 5 3 dB MHz 3 : -40 . 533 dB 4 55 . 000 MHz 2 1 4 : -50 4 . 169 4 85 . 000 CENTER 425 . 000 0 00 MHz SP AN 150 . 000 000 dB MHz MHz SF2218D Measurement Circuit 8 1 5 0 o h m s 5 . 2 & , 3 4 www.RFM.com E-mail: [email protected] ©2010 by RF Monolithics, Inc. 2 :1 7 5 0 o h m s 6 5 Page 2 of 4 SF2218D - 7/27/10 SM3838-8 Case 8-Terminal Ceramic Surface-Mount Case 3.8 X 3.8 mm Nominal Footprint Case Dimensions A B C D E F G H 0.090 (2.29) 0.066 (1.68) 0.002 (0.05) 0.050 TYP. (1.27) 0.029 TYP. (O.74) Dimension Min mm Nom Max 3.6 3.6 1.05 0.95 0.90 0.50 2.39 1.40 3.8 3.8 1.20 1.10 1.00 0.60 2.54 1.75 4.0 4.0 1.35 1.25 1.10 0.70 2.69 2.05 Min Inches Nom Max 0.142 0.142 0.041 0.037 0.035 0.020 0.090 0.055 0.150 0.150 0.047 0.043 0.040 0.024 0.100 0.069 0.157 0.157 0.053 0.049 0.043 0.028 0.110 0.080 Electrical Connections Connection 0.033 (0.84) Port 1 Port 2 Terminals Single-ended Input Balanced Output Ground 2 5, 7 All Others Dot Indicates Pin 1 0.055 TYP. (1.40) Materials PCB Footprint 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 TOP VIEW BOTTOM VIEW A 2 3 956 YYWW 1 E C B 8 8 7 H 7 1 6 6 2 5 5 3 4 4 D www.RFM.com E-mail: [email protected] ©2010 by RF Monolithics, Inc. G F Page 3 of 4 SF2218D - 7/27/10 Tape and Reel Specifications 100 REF. "B" REF. “B” Nominal Size Inches Quantity Per Reel Millimeters 7 178 500 pcs 13 330 3,000 pcs See Detail "A" 13. 0 12.0 Detail “A” 20 .2 2.0 COMPONENT ORIENTATION www.RFM.com E-mail: [email protected] ©2010 by RF Monolithics, Inc. Page 4 of 4 SF2218D - 7/27/10