RF1339B 449.1 MHz • • • • SAW Filter Ideal Front-End Filter for European Wireless Receivers Low-Loss, Coupled-Resonator Quartz Design Simple External Impedance Matching Surface-Mount Ceramic Case with 52 mm2 Footprint The RF1339B is a low-loss, compact, and economical surface-acoustic-wave (SAW) filter designed to provide front-end selectivity in 449.1 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, in Germany under FTZ17 TR 2100, in the United Kingdom under DTI MPT 1340 (for automotive only), in France under PTT Specification ST/PAA/TPA/AGH/1542, and in Scandinavia. SM8558-8 Case 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 (not included). Our new patent pending solder seal process utilizes a Faraday shield lid, which improves out of band rejection. Electrical Characteristics Characteristic Nominal Frequency Sym Notes Minimum Typical fc 2, 4, 5, 6 449.1 Insertion Loss 3 dB Passband IL BW3 3, 4, 7 3.0 2, 3, 4, 7 3 dB Reject Band BW3 2, 3, 4, 7 Rejection at fc - 21.4 MHz (Image) at fc - 10.7 MHz (LO) Temperature 40 50 15 30 -40 Turnover Temperature TO 10 Turnover Frequency fO Absolute Value during the First Year External Impedance Series Inductance Shunt Capacitance Lid Symbolization (in addition to Lot and/or Date Codes) dB kHz ±570 TC Units MHz 5.0 ±85 Ultimate Operating Case Temp. Freq. Temp. Coefficent Frequency Aging 4 Maximum kHz dB 80 3, 7, 8 FTC |fA| L C 3 1, 7 25 +85 °C 40 °C fc MHz 0.032 ppm/°C2 ppm/yr ≤10 47 12 RFM 272 nH pF CAUTION: Electrostatic Sensitive Device. Observe precautions for handling. Notes 1. 2. 3. 4. 5. 6. 7. 8. Typical demonstration circuit shown is for SM8558-8 solder seal filters. Passband and reject bands are specified in reference to fc. All characteristics are specified over the operating temperature range and typical aging is 10 years. Unless noted otherwise, all measurements are made with the filter installed in the specified test fixture. Note that insertions loss, bandwidth, and passband shape are dependent on the impedance matching component values and quality. Demonstration circuits are available for confirmation of device performance. One or more of the following U.S. Patents apply: 4,454,488; 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. The design, manufacturing process, and specifications of this device are subject to change without notice. The turnover temperature, TO, is the temperature of maximum (or turnover) frequency, fo. The nominal frequency at any case temperature, Tc, outside the operating temperature range may be calculated from: f = fo [1 - FTC (To - Tc)2]. RF Monolithics, Inc. Phone: (972) 233-2903 Fax: (972) 387-9148 RFM Europe Sales Phone: (33-0) (1) 39.16.42.89 Fax: (33-0) (1) 39.16.42.70 ©1998 by RF Monolithics, Inc. The stylized RFM logo are registered trademarks of RF Monolithics, Inc. E-mail: [email protected] http://www.rfm.com RF1339B-A-042699 Page 1 of 2 The RF 1339B SAW Filter Absolute Maximum Ratings Rating Value Units Incident RF Power +13 dBm DC Voltage between any 2 pins (Observe ESD Precautions) ±30 VDC -40 to +85 °C Case Temperature1 Typical Filter Response Typical filter responses are shown below. The actual response is dependent on external impedance matching and circuit layout. Illustrated frequencies and minimum rejection for LO and IMAGE are shown only for superhet receivers with 10.7 MHz IF. Electrical Connections Pin Connection 1 Input 2 Ground 3 Output Return 4 Case Ground 5 Case Design Output Ground 7 Input Return 8 Case Ground Dimensions Typical Test Circuit RF Monolithics, Inc. Phone: (972) 233-2903 Fax: (972) 387-9148 RFM Europe Sales Phone: (33-0) (1) 39.16.42.89 Fax: (33-0) (1) 39.16.42.70 ©1998 by RF Monolithics, Inc. The stylized RFM logo are registered trademarks of RF Monolithics, Inc. A B C D E F G H K M N P Millimeters Min Max 8.71 6.04 2.03 0.79 Nominal 1.14 Nominal 1.98 Nominal 0.79 Nominal 6.91 4.24 0.81 2.54 Nominal 1.91 Nominal Inches Min E-mail: [email protected] http://www.rfm.com RF1339B-A-042699 Max 0.343 0.238 0.080 0.031 Nominal 0.045 Nominal 0.078 Nominal 0.031 Nominal 0.040 0.167 0.032 0.100 Nominal 0.075 Nominal Page 2 of 2