RF1172C ® • • • • Ideal Front-End Filter for European Wireless Receivers Low-Loss, Coupled-Resonator Quartz Design Simple External Impedance Matching Complies with Directive 2002/95/EC (RoHS) Pb 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. 433.92 MHz SAW Filter 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. RFM’s advanced SAW design and fabrication technology is utilized to achieve high performance and very low loss with simple external impedance matching. SM5050-8 Case 5x5 Electrical Characteristics Characteristic Center Frequency at 25°C Sym Absolute Frequency Tolerance from 433.92 MHz Insertion Loss 3 dB Bandwidth Rejection fc Notes ∆fC 1, 2 IL 1 BW3 1, 2 Minimum kHz 3.0 5.0 dB 500 600 800 kHz 40 50 30 40 1 dB 80 Operating Case Temp. TC -40 Turnover Temperature TO 15 Turnover Frequency fO Freq. Temp. Coefficient FTC Frequency Aging Absolute Value during the First Year |fA| Impedance @ fc Input ZIN = RINllCIN ZIN Output ZOUT = ROUTllCOUT ZOUT 3, 4 5 1 Lid Symbolization (Y=year WW=week S=shift) Standard Reel Quantity Units MHz ±160 Ultimate Temperature Maximum 433.92 at fc - 21.4 MHz (Image) at fc - 10.7 MHz (LO) Typical Reel Size 7 Inch Reel Size 13 Inch +85 25 35 °C °C fc MHz 0.032 ppm/°C2 ≤10 ppm/yr 212 Ω ll 3.1 pF 212 Ω ll 3.1 pF 409 // YWWS 9 500 Pieces/Reel 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 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. 2. The frequency fc is defined as the midpoint between the 3dB frequencies. 3. Where noted specifications apply over the entire specified operating temperature range. 4. The turnover temperature, TO, is the temperature of maximum (or turnover) frequency, fo. The nominal frequency at any case temperature, Tc, may be calculated 5. 6. 7. 8. 9. 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. RF Monolithics, Inc. Phone: (972) 233-2903 Fax: (972) 387-8148 RFM Europe Phone: 44 1963 251383 Fax: 44 1963 251510 ©1999 by RF Monolithics, Inc. The stylized RFM logo are registered trademarks of RF Monolithics, Inc. E-mail: [email protected] http://www.rfm.com RF1172C-042704 Page 1 of 2 433.92 MHz SAW Filter Absolute Maximum Ratings Rating Value Units 10 dBm Input Power Level DC Voltage Storage Temperature Soldering Temperature 12 VDC -40 to +85 °C 260 °C (10 seconds / 5 cycles max.) 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 PRm PRm 1:-3.9614 dB 434.000 000 MHz 1 Max Max 1 Cor Cor Min 3dB Passband at 25°C 4dB/div 8dB/div Lo Image START 433 MHz 200 kHz/div STOP 435 MHz START 410 MHz Electrical Connections Pin Connection 1 Input Ground 2 Input 3 to be Grounded 4 Case Ground 5 Output 6 Output Ground 7 to be Grounded 8 Case Ground 5 Mhz/div E C B 8 A STOP 460 MHz 8 1 7 D 7 1 2 6 6 2 3 5 5 3 G 4 4 F Matching Circuit to 50Ω Ω Case Dimensions Dimension 7 6 Output L=33 nH 5 1 8 4 2 3 Input L=33 nH C=3.9pF C=3.9pF RF Monolithics, Inc. Phone: (972) 233-2903 Fax: (972) 387-8148 RFM Europe Phone: 44 1963 251383 Fax: 44 1963 251510 ©1999 by RF Monolithics, Inc. The stylized RFM logo are registered trademarks of RF Monolithics, Inc. A B C D E F G Min 4.8 4.8 mm Nom 5.0 5.0 2.39 2.08 1.17 0.64 2.54 Max 5.2 5.2 1.7 2.69 Min 0.189 0.189 Inches Nom 0.197 0.197 0.094 0.082 0.046 0.025 0.100 E-mail: [email protected] http://www.rfm.com RF1172C-042704 Max 0.205 0.205 0.067 0.106 Page 2 of 2