Preliminary SF2185A • Precision IF SAW Filter • Hermetic 13.3 x 6.5 mm Surface-mount Case • Complies with Directive 2002/95/EC (RoHS) 70.00 MHz SAW Filter Pb Absolute Maximum Ratings Rating Value Maximum Incident Power in Passband dBm 30 VDC -40 to +85 °C Maximum DC Voltage between any Two Terminals Storage Temperature Range in Tape and Reel Suitable for Lead-free Soldering - Maximum Soldering Profile Electrical Characteristics Characteristic Units +10 SM13365-12 260 °C for 30 s Sym Notes Min Typ Max Units FC 1 69.8 70.0 70.2 MHz Minimum Insertion Loss ILMIN 1 10.6 12.0 1 dB Bandwidth BW1 1 9.0 9.7 3 dB Bandwidth BW3 1 9.5 10.0 35 dB Bandwidth BW35 1 Center Frequency 11.7 dB MHz MHz 13.0 MHz Attenuation Referenced to ILMIN 10 to 63 MHz 3 40 45 dB 78 to 140 MHz 3 40 45 dB Passband Ripple, FC ± 4.0 MHz Group Delay Ripple, FC ± 4.0 MHz Operating Temperature 1, 2, 3 1 0.6 1.0 dBP-P 80 160 nsP-P -20 Source Impedance +80 50 °C ohm Load Impedance 50 ohm Frequency Temperature Coefficient -94 ppm/°C Impedance Matching to 50 Ω Case Style Lid Symbolization (YY = year, WW = week) External Source/Load L SM13365-12 13.3 x 6.5 mm Nominal Footprint RFM SF2185A 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 SF2185A - 6/11/09 SF2185A Filter Response 29 Jan 2009 14:38:36 CH1 S2 1 LO G 10 dB/ 1 : 0 . 0 00 0 RE F -60 d B dB 0 . 0 00 000 MHz CH1 PASS SF2185A CH1 M ax BW : Markers REF=1 9 . 1 042 59 MHz 70 . 017709 M Hz 1 Cor ce nt 3 2 : 4 Q: 7 . 6 907 1 _ loss : -10 . 592 dB Full CENTER 70 . 000 000 MHz SPAN 50 . 0 00 000 MHz SF2185A Passband Amplitude and Group Delay Ripple 29 Jan 2009 14:41:40 CH1 S 21 DEL 50 ns/ REF 1 .6 u s 2 : 34 . 33 2 ns 7 . 4 00 0 00 MHz CH1 PASS SF21 85 A CH1 S mo C Markers RE F=3 me2an : 1 . 6 42 8 s . d ev : 1 1 . 13 2 ns p-p : 5 7 . 4 49 ns us 1 3 Fu ll CH2 S 21 L OG 1 dB/ REF -10 .74 dB 2 : - . 16 420 dB 7 . 4 00 0 00 MHz CH2 mean C Fu ll www.RFM.com E-mail: [email protected] ©2009 by RF Monolithics, Inc. . 001 dB s . d ev : . 1 970 0 dB 2 p-p : . 85 240 dB 1 3 START Markers RE F=3 : -11 6 5 . 000 0 00 M Hz STOP 7 5 . 000 0 00 MHz Page 2 of 5 SF2185A - 6/11/09 Tuning Component Values L 1 5 0 o h m s 2 2 0 n H 1 2 1 2 (K ) 1 0 9 5 . 3 1 1 & # ) L 2 4 8 (E ) 5 6 7 1 5 0 n H 5 0 o h m s PCB Pad Layout www.RFM.com E-mail: [email protected] ©2009 by RF Monolithics, Inc. Page 3 of 5 SF2185A - 6/11/09 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 K Output E 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 4 of 5 SF2185A - 6/11/09 Tape and Reel Details www.RFM.com E-mail: [email protected] ©2009 by RF Monolithics, Inc. Page 5 of 5 SF2185A - 6/11/09