RFM products are now Murata products. RF1172C Ideal Front-End Filter for European Wireless Receivers Pb Low-Loss, Coupled-Resonator Quartz Design Simple External Impedance Matching 433.92 MHz Complies with Directive 2002/95/EC (RoHS) SAW Filter The RF1172C is a low-loss, compact, and economical surface-acoustic-wave (SAW) filter designed to provide front-end selectivity in 433.92 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 operating in Europe under ETSI I-ETS 300 220. 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 SM5050-8 Case IF. Muratas advanced SAW design and fabrication technology is utilized to achieve high 5 x 5 performance and very low loss with simple external impedance matching. Characteristic Sym Notes Minimum Typical Maximum Units f Center Frequency at 25C Absolute Frequency c 433.92 MHz 1, 2 f 160 kHz Tolerance from 433.92 MHz C Insertion Loss IL 1 3.0 5.0 dB BW 1, 2 kHz 3 dB Bandwidth 3 500 600 800 at f - 21.4 MHz (Image) Rejection 40 50 c at f - 10.7 MHz (LO) 1 dB c 30 40 Ultimate 80 T Temperature Operating Case Temp. -40 +85 C C T Turnover Temperature O 15 25 35 C 3, 4 f f Turnover Frequency MHz O c 2 FTC Freq. Temp. Coefficient 0.032 ppm/C Frequency Aging Absolute Value during the First Year fA 5 10 ppm/yr Input Z = R llC Z Impedance fc IN IN IN IN 212 ll 3.1 pF 1 Output Z = R llC Z 212 ll 3.1 pF OUT OUT OUT OUT Lid Symbolization (Y=year WW=week S=shift) 409 // YWWS Standard Reel Quantity Reel Size 7 Inch 500 Pieces/Reel 9 Reel Size 13 Inch 3000 Pieces/Reel CAUTION: Electrostatic Sensitive Device. Observe precautions for handling. NOTES: 1. Unless noted otherwise, all measurements are made with the filter installed in the specified test fixture which is connected to a 50 W test system with VSWR 1.2:1. The test fixture L and C are adjusted for minimum insertion loss at the filter center frequency, f . Note that insertion loss and bandwidth and passband shape are dependent on c the impedance matching component values and quality. 2. The frequency f is defined as the midpoint between the 3dB frequencies. c 3. Where noted specifications apply over the entire specified operating temperature range. 4. The turnover temperature, T , is the temperature of maximum (or turnover) frequency, f . The nominal frequency at any case temperature, T , may be calculated from: O o c 2 f= f 1 - FTC (T -T ) . o o c 5. Frequency aging is the change in fc with time and is specified at +65C or less. Aging may exceed the specification for prolonged temperatures above +65C. Typically, aging is greatest the first year after manufacture, decreasing significantly in subsequent years. 6. The design, manufacturing process, and specifications of this device are subject to change. 7. One or more of the following U.S. Patents apply: 4,54,488, 4,616,197, and others pending. 2010-2015 by Murata Electronics N.A., Inc. RF1172C (R) 4/6/15 Page 1 of 2 www.murata.com Rating Value Units Input Power Level 10 dBm DC Voltage 12 VDC Storage Temperature -40 to +85 C Soldering Temperature (10 seconds / 5 cycles max.) 260 C Typical Filter Response Typical filter responses are shown below. The actual response is dependent on external impedance matching and circuit layout. CH1 S31 LOG 4 dB / REF -3.959 dB 1:-3.9535 dB 434.020 000 MHz CH1 S31 LOG 8 dB / REF -40 dB 1:-3.9614 dB 434.000 000 MHz PRm PRm 1 Max Max 1 Cor Cor Min 3dB 4dB/div Passband 8dB/div at 25C Lo Image START 433 MHz 200 kHz/div STOP 435 MHz START 410 MHz 5 Mhz/div STOP 460 MHz Electrical Connections C E B 8 8 Pin Connection 1 Input Ground D 1 7 7 1 2 Input A 2 6 6 2 G 3 to be Grounded 4 Case Ground 3 5 5 3 5 Output 4 4 6 Output Ground F 7 to be Grounded 8 Case Ground Matching Circuit to 50 Case Dimensions mm Inches Dimension Min Nom Max Min Nom Max A 4.8 5.0 5.2 0.189 0.197 0.205 B 4.8 5.0 5.2 0.189 0.197 0.205 7 1 C 1.7 0.067 Input 8 6 2 D 2.08 0.082 L=33 nH 4 C=3.9pF E 1.17 0.046 Output 5 3 L=33 nH F 0.64 0.025 C=3.9pF G 2.39 2.54 2.69 0.094 0.100 0.106 2010-2015 by Murata Electronics N.A., Inc. RF1172C (R) 4/6/15 Page 2 of 2 www.murata.com