RF1191 RF1191 224.7 MHz MHz 224.7 SAW Filter Ideal Front–End Filter for 224.7 MHz Wireless Receivers Low–Loss, Coupled–Resonator Quartz Design Simple External Impedance Matching Rugged TO39 Hermetic Package The RF1191 is a low–loss, compact, and economical surface–acoustic–wave (SAW) filter designed to provide front–end selectivity in 224.7 MHz receivers. Receiver designs using this filter include superhet with 10.7 MHz or 500 kHz IF, direct TO39–3 Case conversion, and superregen. Typical applications of these receivers are wireless remote–control and security devices operating in France under PTT Specification ST/PAA/TPA/AGH/1542. 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). Quartz construction provides execellent frequency stablility over a wide temperature range. ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ ÄÄÄ ÄÄÄÄ ÄÄÄÄÄ ÄÄÄÄ ÄÄÄÄÄ ÄÄÄÄ ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ Electrical Characteristics Characteristic Center Frequency at 25_C Absolute Frequency Tolerance from 224.7 MHz Insertion Loss 3 dB Bandwidth Rejection Sym Notes Minimum fC 2, 3, 4, 224.62 ∆fC 5, 6 IL 2, 4, 7 BW3 2, 3, 4, 7 at fc–21.4 MHz (Image) at fc–10.7 MHz (LO) 2 Typical Maximum Units 224.78 MHz ±80 kHz 2.3 5.0 dB 500 680 800 kHz 40 50 15 30 Ultimate Temperature Operating Case Temperature TC Turnover Temperature TO Turnover Frequency fO Frequency Temperaure Coefficient ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ ÄÄÄÄÄÄÄÄ ÄÄÄÄÄÄÄÄÄ ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ Frequency Aging Absolute Value during the First Year External Impedance p dB 80 –35 4, 7, 8 +85 15 25 FTC |fA| 1 Series Inductance L 2, 7 Shunt Capacitance C 2, 7 Lid Symbolization (in addition to Lot and/or Date Codes) 35 °C °C fC MHz 0.032 ppm/°C2 <±10 ppm/yr 12 turns 28 AWG on Toroid 6 50 pF RFM RF1191 CAUTION: Electrostatic Sensitive Device. Observe precautions for handling. Notes: 1. 2. 3. 4. 5. 6. 7. 8. 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. Unless noted otherwise, all measurements are made with the filter installed in the specified test fixture, which is connected to a 50Ω test system with VSWR £ 1.2:1. The test fixture’s L and C are adjusted for minimum insertion loss at the filter center frequency, fC. Note that insertion loss, bandwidth, and passband shape are dependent on the impedance matching component values and quality. The optimum impedance matching component values are dependent on circuit parasitic losses. The frequency fC is defined as the midpoint between the 3dB frequencies. Unless noted otherwise, specifications apply over the entire specified operating temperature range. One or more of the following United States 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 center frequency at any case temperature, TC, may be calculated from: f = fO [ 1 – FTC ( TO – TC )2 ]. E1996 by RF Monolithics, Inc. The stylized RFM logo and RFM are registered trademarks of RF Monolithics, Inc. Revision: 4/24/97. Page 1 of 2. 224.7 MHz SAW Filter Absolute Maximum Ratings ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ ÄÄÄÄÄÄÄÄÄÄ ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ Rating Incident RF Power DC Voltage Between Any Two Pins (Observe ESD Precautions) Case Temperaure 1 Value Units +13 dBm ±30 VDC –40 to +85 °C Typical Filter Response 0 dB –10 0 dB –1 –20 –2 Amplitude Response Amplitude Response Typical filter responses are shown below. The actuall reponse 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. –30 –40 –50 –3 –4 –5 –60 –6 –70 –7 –80 –8 5 MHz / div 200 kHz / div Frequency Frequency Electrical Connections ÄÄÄ ÄÄÄÄÄÄ ÄÄÄÄÄÄÄÄÄ Pin Connection 1 Input or Output 2 Output or Input 3 Case Design B Bottom View Pin 1 Pin 2 Pi 3 Pin Case Ground A E ÄÄÄÄÄÄÄÄÄÄÄÄ ÄÄÄÄÄÄÄ ÄÄÄÄÄÄ ÄÄÄÄÄÄÄ ÄÄÄÄÄÄ ÄÄÄ ÄÄÄÄ ÄÄÄÄ ÄÄÄÄ ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ 2 3 Millimeters Min L 1 C To 50Ω Network Analyzer Printed in U.S.A. 0.05C–04/25/97. Inches Min Max 9.30 0.366 B 3.18 0.125 C 2.50 3.50 0.098 0.138 D 0.46 Nominal 0.018 Nominal E 5.08 Nominal 0.200 Nominal F 2.54 Nominal 0.100 Nominal G 2.54 Nominal 0.100 Nominal J 4347 Sigma Road, Dallas, Texas 75244, U.S.A. 18 allée Marin la Meslée, 78560 Port Marly, FRANCE Max 45 A H RF Monolithics, Inc. RFM Europe Sales H F D (3 places) Dimensions L C G J (2 places) Typical Test Circuit From 50 Ω Network Analyzer C 1.02 1.40 Phone: (972) 233–2903 Phone: (33–0) (1) 39.16.42.89 0.040 0.055 Fax: (972) 387–8148 Fax: (33–0) (1) 39.16.42.70 Revision: 10/21/96. Page: 2 of 2