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| (R) RF1391C Pb * * * * Ideal Front-End Filter for Wireless Receivers Low-Loss, Coupled-Resonator Quartz Design Simple External Impedance Matching Complies with Directive 2002/95/EC (RoHS) The RF1391C is a low-loss, compact, and economical surface-acoustic-wave (SAW) filter designed to provide front-end selectivity in 433.42 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 IF. RFM's advanced SAW design and fabrication technology is utilized to achieve high performance and very low loss with simple external impedance matching. 433.42 MHz SAW Filter SM5050-8 Case 5x5 Electrical Characteristics Characteristic Center Frequency at 25C Insertion Loss 3 dB Bandwidth Rejection at fc - 21.4 MHz (Image) at fc - 10.7 MHz (LO) Ultimate Temperature Operating Case Temp. Turnover Temperature Turnover Frequency Freq. Temp. Coefficient Frequency Aging Impedance @ fc Absolute Value during the First Year Input ZIN = RIN//CIN Output ZOUT = ROUT//COUT Lid Symbolization (Y=year WW=week S=Shift) Standard Reel Quantity Standard Reel Quantity 7 Inch Reel 13 Inch Reel TC TO fO FTC |fA| ZIN ZOUT 5 1 3, 4 -40 15 25 fc 0.032 10 212 // 3.1 pF 212 // 3.1 pF 415 YWWS 500 pieces/reel 3000 pieces/reel 1 Absolute Frequency Tolerance from 433.42 MHz Sym fc fC IL BW3 Notes 1, 2 1 1, 2 500 40 30 Minimum Typical 433.42 -120/+200 3.0 600 50 40 80 +85 35 C C MHz ppm/C2 ppm/yr dB 5.0 750 Maximum Units MHz kHz dB kHz 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 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 5. 6. 7. 8. be calculated from: f = fo [1 - FTC (To - Tc)2]. 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. The design, manufacturing process, and specifications of this device are subject to change without notice. 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. RF Monolithics, Inc. Phone: (972) 233-2903 Fax: (972) 387-8148 RFM Europe Phone: 44 1963 251383 Fax: 44 1963 251510 (c)1999 by RF Monolithics, Inc. The stylized RFM logo are registered trademarks of RF Monolithics, Inc. E-mail: info@rfm.com http://www.rfm.com RF1391C-040103 Page 1 of 2 433.42 MHz Absolute Maximum Ratings Rating Input Power Level DC Voltage Storage Temperature Soldering Temperature SAW Filter Value 10 12 -40 to +85 (10 seconds / 5 cycles max.) 260 Units dBm VDC C C Typical Filter Response Typical filter responses are shown below. The actual response is dependent on external impedance matching and circuit layout. CH1 S21 LOG 5 dB / REF -20 dB 1:-3.9167 dB 433.420 000 MHz CH1 S21 LOG 8 dB / REF -30 dB 1:-3.9433 dB 433.500 000 MHz PRm 1 PRm 1 Max Cor Cor 5 dB/div Min 3dB Passband at 25C 8 dB/div Lo Image START 432.500 000 MHz 200 kHz/div STOP 434.500 000 MHz START 409.5 MHz 5 Mhz/div STOP 459.5 MHz Electrical Connections Pin 1 2 3 4 5 6 7 8 Connection Input Ground Input to be Grounded Case Ground Output Output Ground to be Grounded Case Ground A 2 3 1 B 8 C E 8 D7 6 5 7 6 5 1 2 3 G 4 4 F Matching Circuit to 50 Case Dimensions Dimension 7 6 L=33 nH 1 L=33 nH 8 4 2 C=4.3 pF Input Output C=4.3 pF 5 3 A B C D E F G Min 4.8 4.8 mm Nom 5.0 5.0 2.08 1.17 0.64 2.54 Max 5.2 5.2 1.7 Min 0.189 0.189 Inches Nom 0.197 0.197 0.082 0.046 0.025 0.100 Max 0.205 0.205 0.067 2.39 2.69 0.094 0.106 RF Monolithics, Inc. Phone: (972) 233-2903 Fax: (972) 387-8148 RFM Europe Phone: 44 1963 251383 Fax: 44 1963 251510 (c)1999 by RF Monolithics, Inc. The stylized RFM logo are registered trademarks of RF Monolithics, Inc. E-mail: info@rfm.com http://www.rfm.com RF1391C-040103 Page 2 of 2 |
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