SF2185A RFM | Alldatasheet
Document overview
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Technical content
www.RFM.com E-mail: info@rfm.com Page 1 of 5 ©2009 by RF Monolithics, Inc. SF2185A - 6/11/09
Electrical Characteristics
Characteristic Sym Notes Min Typ Max Units Center Frequency FC 1 69.8 70.0 70.2 MHz Minimum Insertion Loss ILMIN 1 10.6 12.0 dB 1 dB Bandwidth BW1 19 . 0 9.7 MHz 3 dB Bandwidth BW3 1 9.5 10.0 MHz 35 dB Bandwidth BW35 1 11.7 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 1, 2, 3 0.6 1.0 dBP-P Group Delay Ripple, FC ± 4.0 MHz 80 160 nsP-P Operating Temperature 1 -20 +80 °C Source Impedance 50 ohm Load Impedance 50 ohm Frequency Temperature Coefficient -94 ppm/°C Impedance Matching to 50 Ω External Source/Load L Case Style SM13365-12 13.3 x 6.5 mm Nominal Footprint Lid Symbolization (YY = year, WW = week) RFM SF2185A YYWW
- Precision IF SAW Filter Hermetic 13.3 x 6.5 mm Surface-mount Case Complies with Directive 2002/95/EC (RoHS) Absolute Maximum Ratings Rating Value Units Maximum Incident Power in Passband +10 dBm Maximum DC Voltage between any Two Terminals 30 VDC Storage Temperature Range in Tape and Reel -40 to +85 °C Suitable for Lead-free Soldering - Maximum Soldering Profile 260 °C for 30 s
70.00 MHz
- Unless noted otherwise, all specifications apply over the operating temperature range with filter soldered to the specified d emonstration board with impedance matching to 50 Ω and measured with 50 Ω network analyzer. 2. Unless noted otherwise, all frequency specifications are referenced to the nominal center frequency, fc. 3. Rejection is measured as attenuation below the minimum IL point in the passband. Rejection in final user application is depe ndent on PCB layout and external impedance matching design. See Application Note No. 42 for details. 4. Part to part absolute delay measurement records the absolute delay mean across 1 dB passband. 5. "LRIP" or "L" after the part number indicates "low rate initial production" and "ENG" or "E" indicates "engineering prototype s.” 6. The design, manufacturing process, and specifications of this filter are subject to change. 7. 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. 8. US and international patents may apply. Pb CAUTION: Electrostatic Sensitive Device. Observe precautions for handling. Notes: Preliminary
www.RFM.com E-mail: info@rfm.com Page 2 of 5 ©2009 by RF Monolithics, Inc. SF2185A - 6/11/09 SF2185A Filter Response SF2185A Passband Amplitude and Group Delay Ripple CH1 S2 1 LO G 10 dB/ RE F -60 d B CENTER 70 . 000 000 MH z SPAN 50 . 000 000 M Hz Cor
29 Jan 2009 14:38:36
1: 0. 00 00 dB 0. 00 0 000 MHz Ma x REF=1 CH 1 M arkers BW : 9 . 1 042 59 MHz cent : 70 . 017709 MH z Q: 7 . 6 907 1 _ loss : -10 . 592 dB CH1 PASS SF2185A Full CH1 S2 1 DEL 5 0 n s/ RE F 1. 6 us C Sm o CH2 S 21 LOG 1 dB/ REF -10.74 dB START 6 5 . 000 0 00 M Hz STOP 75 . 000 000 MHz C
29 Jan 2009 14:41:40
2 : 34 . 332 ns 7 . 4 00 0 00 MHz RE F= 3 CH1 Markers me an : 1 . 6 42 8 u s s . dev : 11 . 132 ns p-p : 5 7 . 4 49 ns CH1 PASS 2 : - . 16420 dB 7 . 4 00 0 00 MHz RE F= 3 CH2 Markers mean : -11 . 001 d B s . dev : . 19700 d B p-p : . 85240 dB SF2185A Full Full
www.RFM.com E-mail: info@rfm.com Page 3 of 5 ©2009 by RF Monolithics, Inc. SF2185A - 6/11/09 Tuning Component Values PCB Pad Layout /G53 /G46 /G32 /G31 /G38 /G35 /G41 /G32 /G20 /G28 /G4B /G29 /G33 /G34 /G36 /G38 /G20 /G28 /G45 /G29 /G37 /G35 /G31 /G35 /G30 /G20 /G6E /G48 /G31 /G32 /G32 /G30 /G20 /G6E /G48 /G35 /G30 /G20 /G6F /G68 /G6D /G73 /G35 /G30 /G20 /G6F /G68 /G6D /G73 /G39 /G31 /G30 /G4C /G31 /G4C /G32 /G31 /G31 /G31 /G32
www.RFM.com E-mail: info@rfm.com Page 4 of 5 ©2009 by RF Monolithics, Inc. SF2185A - 6/11/09 SM13365-12 Case Case Dimensions Electrical Connections Dimension mm Inches Min Nom Max Min Nom Max C 1.91 2.00 0.075 0.079 D 1.50 0.059 E 0.79 0.031 H 1.0 0.039 P 2.54 0.100 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 12-Terminal Ceramic Surface-Mount Case 13.3 x 6.5 mm Nominal Footprint
www.RFM.com E-mail: info@rfm.com Page 5 of 5 ©2009 by RF Monolithics, Inc. SF2185A - 6/11/09 Tape and Reel Details