RFM products are now Murata products. RF1211D • • • • Ideal Front-End Filter for Domestic Wireless Receivers Low-Loss, Coupled-Resonator Quartz Design Simple External Impedance Matching Complies with Directive 2002/95/EC (RoHS) Pb 315.0 MHz SAW Filter The RF1211D is a low-loss, compact, and economical surface-acoustic-wave (SAW) filter designed to provide front-end selectivity in 315.0 MHz receivers. Receiver designs using this filter include superhet with 10.7 MHz or 500 kHz IF, direct conversion and superregen. Typical applications of these receivers are wireless remote-control and security devices (especially for automotive keyless entry) operating in the USA under FCC Part 15, in Canada under RSS-210, and in Italy This coupled-resonator filter (CRF) uses selective null placement to provide suppression, typically greater than 40 dB, of the LO and image spurious responses of superhet receivers with 10.7 MHz IF. Murata’s advanced SAW design and fabrication technology is utilized to achieve high performance and very low loss with simple external impedance matching. SM3838-8 Case 3.8 x 3.8 Electrical Characteristics Characteristic Center Frequency at 25°C Absolute Frequency Insertion Loss Sym Notes Minimu m Typical Maximu m Units 314.85 315.00 315.15 MHz 1.6 2.5 dB fc 1, 2, 3 ILMIN 1, 3 BW3 1, 3 Passband Ripple (Relative to ILMIN) Fc ±150kHz 1, 3 3 dB Bandwidth Rejection Attenuation: (relative to ILmin) 1.2 dB 800 kHz 10 - 295 MHz 46 51 41 46 305 - 310 MHz 27 30 310 - 313 MHz 15 17 313 - 314 MHz 6 8 20 24 320 - 325 MHz 15 18 325 - 335 MHz 33 35 335 - 600 MHz 43 45 600 - 1000 MHz 55 60 1, 3 Freq. Temp. Coefficient FTC Frequency Aging Absolute Value during the First Year lfAl Impedance @ fc Input ZIN=RINllCIN ZIN Output ZOUT=ROUTllCOUT ZOUT 5 1 Lid Symbolization (Y=year WW=week S=shift) Standard Reel Quantity 0.7 600 295 - 305 MHz 316.5 - 320 MHz Temperature 500 dB 0.032 ppm/°C2 ≤10 ppm/yr 5.0Ω//2.2pf 9.3Ω//1.7pf 476 // YWWS Reel Size 7 Inch 9 Reel Size 13 Inch 500 Pieces/Reel 3000 Pieces/Reel CAUTION: Electrostatic Sensitive Device. Observe precautions for handling. NOTES: 1. 2. 3. 4. 5. 6. 7. 8. 9. Unless noted otherwise, all measurements are made with the filter installed in the specified test fixture which is connected to a 50 Ω test system with VSWR ≤ 1.2:1. The test fixture L and C are adjusted for minimum insertion loss at the filter center frequency, fc. Note that insertion loss and bandwidth and passband shape are dependent on the impedance matching component values and quality. The frequency fc is defined as the midpoint between the 3dB frequencies. Where noted specifications apply over the entire specified operating temperature range of -40°C to +90°C. The turnover temperature, TO, is the temperature of maximum (or turnover) frequency, fo. The nominal frequency at any case temperature, Tc, may be calculated from: f = fo [1 - FTC (To - Tc)2]. Frequency aging is the change in fc with time and is specified at +65°C or less. Aging may exceed the specification for prolonged temperatures above +65°C. Typically, aging is greatest the first year after manufacture, decreasing significantly in subsequent years. The design, manufacturing process, and specifications of this device are subject to change. One or more of the following U.S. Patents apply: 4,54,488, 4,616,197, and others pending. All equipment designs utilizing this product must be approved by the appropriate government agency prior to manufacture or sale. Tape and Reel Standard Per ANSI / EIA 481. ©2010-2015 by Murata Electronics N.A., Inc. RF1211D (R) 4/6/15 Page 1 of 2 www.murata.com Rating Value Units 10 dBm 12 VDC -40 to +125 °C Input Power Level DC Voltage Storage Temperature Operable Temperature Range Soldering Temperature -40 to +125 °C 260 °C (10 seconds / 5 cycles max.) Electrical Connections Pin Connection 1 Input 2 Input Ground 3 Ground 4 Case Ground 5 Output 6 Output Ground 7 Ground 8 Case Ground A E C B 8 8 1 7 H 7 1 2 6 6 2 3 5 5 3 G 4 4 D F Matching Circuit to 50Ω 82nH 1 7 6 91nH 5 Output Input 8 4 2 10pf Case Dimensions Dimension Min A B C D E F G H 3 8.2pf 3.6 3.6 1.00 0.95 0.90 0.50 2.39 1.40 mm Nom 3.8 3.8 1.20 1.10 1.0 0.6 2.54 1.75 Max 4.0 4.0 1.40 1.25 1.10 0.70 2.69 2.05 Min 0.14 0.14 0.04 0.037 0.035 0.020 0.090 0.055 Inches Nom 0.15 0.15 0.05 0.043 0.04 0.024 0.100 0.069 Max 0.16 0.16 0.055 0.05 0.043 0.028 0.110 0.080 Optional Electrical Connections Pin Connection 1 Input Ground 2 Input 3 Ground 4 Case Ground 5 Output Ground 6 Output 7 Ground 8 Case Ground ©2010-2015 by Murata Electronics N.A., Inc. RF1211D (R) 4/6/15 Matching Circuit to 50Ω 7 1 91nH Output 6 8.2pf 5 Page 2 of 2 8 4 82nH 2 3 Input 10pf www.murata.com