RF1181D ® • • • • Ideal Front-End Filter for 916.5 MHz Wireless Receivers Low-Loss, Coupled-Resonator Quartz Design Simple External Impedance Matching Complies with Directive 2002/95/EC (RoHS) Pb The RF1181D is a low-loss, compact, and economical surface-acoustic-wave (SAW) filter designed to provide front-end selectivity in 916.5 MHz receivers. Receiver designs using this filter include superhet with 10.7 MHz IF, direct conversion and superregen. Typical applications of these receivers are wireless remotecontrol and security, data telemetry, and meter reading devices operating in the USA under FCC Part 15 and in Canada under DoC RSS-210. 916.5 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 (not included). Our new patent pending solder seal process utilizes a Faraday shield lid, which improves out of band rejection. SM3838-8 Case 3.8 x 3.8 Electrical Characteristics Characteristic Center Frequency at 25°C Sym fc Absolute Frequency Tolerance from 916.50 MHz Insertion Loss 3 dB Bandwidth Rejection (Attenuation: relative to Min IL:) ∆fc 1, 2, 3 IL 1, 3 BW3 1, 3 Frequency Aging Impedance @ fC Minimum 916.5 dB 500 600 900 kHz 50 30 35 906 to 910 MHz 25 30 35 40 925 to 933 MHz 14 18 933 to 940 MHz 30 35 940 to 1100 MHz 40 45 1, 3 Freq. Temp. Coefficient FTC Absolute Value during the First Year |fA| 5 Input ZIN = RIN/CIN ZIN 1 7 Inch Reel 13 Inch Reel dB 0.032 ppm/°C2 ≤10 ppm/yr 37Ω // 1.6pF 25Ω // 1.8pF Lid Symbolization (in addition to Lot and/or Date Codes) Standard Reel Quantity MHz 4.0 40 ZOUT Units 2.5 10 to 895 MHz Output ZOUT = ROUT/COUT Maximum kHz 3, 4 Standard Reel Quantity Typical 895 to 906 MHz 922 to 925 MHz Temperature Notes 435 // YWWS 9 500 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 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 for 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 RF1181D-081704 Page 1 of 3 916.5 MHz SAW Filter 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 RF1181D-081704 Page 2 of 3 916.5 MHz SAW Filter Absolute Maximum Ratings Rating Value Units Input Power Level 10 dBm DC Voltage 12 VDC Storage Temperature -40 to +125 °C Operable Temperature Range -40 to +125 °C 260 °C Soldering Temperature (10 seconds / 5 cycles max.) Pin Connection 1 Input Ground 2 Input 3 Ground 4 Case Ground 5 Output Ground 6 Output 7 Ground 8 Case Ground A E C B 8 Electrical Connections 8 1 7 H 7 1 2 6 6 2 3 5 5 3 G 4 4 F D Matching Circuit to 50Ω Ω Case Dimensions Dimension 7 1 12 nH 12 nH 6 Output A B C D E F G H 5 8 4 2 Input 3 Min 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 1 2 3 4 5 6 7 8 Connection Input Input Ground Ground Case Ground Output Output Ground Ground Case Ground Matching Circuit to 50Ω Ω 12 nH 7 6 12 nH Output 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. 1 8 Input 2 4 5 3 E-mail: [email protected] http://www.rfm.com RF1181D-081704 Page 3 of 3