RF1432C • • • • 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 319.500 MHz SAW Filter The RF1432C is a low-loss, compact and economical surface-acoustic-wave (SAW) filter designed to provide front-end selectivity in 319.500 MHz receivers. Recevier designs using this filter include superhet with 10.7 MHz or 500 kHz IF, direct conversion and superregen. 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 excellent frequency stability over a wide temperature range. SM5050-8 Case 5x5 Electrical Characteristics Characteristic Center Frequency at 25°C Sym Absolute Frequency Tolerance from 319.500 MHz Insertion Loss 3 dB Bandwidth Rejection fC ∆fC Notes Minimum 319.420 1, 2 IL 1 BW3 1, 2 319.580 MHz ±80 kHz 1.8 2.8 dB 800 kHz 40 50 40 50 1 dB 80 Operating Case Temperature TC -40 Turnover Temperature TO 25 Turnover Frequency fO Frequency Temperature Coefficent FTC Frequency Aging Absolute Value during the First Year IfAI Impedance @ FC INPUT ZIN = RIN // CIN OUTPUT ZOUT = ROUT // COUT Units 600 Ultimate Temperature Maximum 500 at fc - 21.4 MHz (Image) at fc - 10.7 MHz (LO) Typical 3, 4 +85 40 55 °C °C fC MHz 0.032 ppm/°C2 5 ≤10 ppm/yr ZIN 1 3.97kΩ // 4.37pF ZOUT 1 Lid Symbolization (in addition to Lot and/or Date Codes) 2.56kΩ // 4.27pF 621 // DATECODE CAUTION: Electrostatic Sensitive Device. Observe precautions for handling. Notes: 1. 2. 3. 4. 5. 6. 7. 8. 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, 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. 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 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. www.RFM.com E-mail: [email protected] ©2008 by RF Monolithics, Inc. Page 1 of 3 RF1432C - 3/21/08 CH1 S 11 13 Jun 2006 05:48:35 0.877 436.84 pH 1_ 47.43 1 U FS 319.500 000 MHz RF1432C SN2 R7 PRm Cor 1 Full CH2 S 22 1_: 49.184 1 U FS -3.6387 136.9 pF 319.500 000 MHz PRm Cor Full 1 CENTER 319.500 000 MHz CH1 S 21 SPAN log MAG 1 dB/ REF -4 dB 2.000 000 MHz 13 Jun 2006 05:49:08 1_: 0 dB 0.000 000 MHz RF1432C SN2 R7 PRm BW: Cor 2 REF=1 Max 1 .608 859 MHz cent: 319.496746 MHz Q: 524.75 1_ loss: -1.8101 dB 3 4 Resp CH1 CENTER 319.500 000 MHz CH2 S 21 log MAG SPAN 10 dB/ REF -3 dB 2.000 000 MHz 1_ 0 dB 0.000 000 MHz 1 PRm Cor 3_ -58.007 dB -21.4 MHz Resp 3 CH2 CENTER 319.500 000 MHz www.RFM.com E-mail: [email protected] ©2008 by RF Monolithics, Inc. REF=1 2_ -58.838 dB -10.7 MHz 2 SPAN 50.000 000 MHz Page 2 of 3 RF1432C - 3/21/08 Absolute Maximum Ratings Rating Value Units Input Power Level 10 dBm DC Voltage 12 VDC -40 to +85 °C 260 °C Storage Temperature5 Soldering Temperature (10 seconds / 5 cycles max.) Electrical Connections Pin 1 Input 2 Input Ground 3 Ground 4 Case Ground 5 Output 6 Output Ground 7 Ground 8 Case Ground A E C B 8 Connection 8 1 7 D 7 1 2 6 6 2 3 5 5 3 G 4 4 F Matching Circuit to 50Ω Case Dimensions 82nH 1 7 6 82nH 5 Output 8 4 2 3 Input mm Dimension A B C D E F G Inches Min Nom Max Min Nom Max 4.8 4.8 1.30 1.98 1.07 0.50 2.39 5.0 5.0 1.50 2.08 1.17 0.64 2.54 5.2 5.2 1.7 2.18 1.27 0.70 2.69 0.189 0.189 0.050 0.078 0.042 0.020 0.094 0.197 0.197 0.060 0.082 0.046 0.025 0.100 0.205 0.205 0.067 0.086 0.05 0.028 0.106 Optional Electrical Connections Matching Circuit to 50Ω Pin 1 Connection Input Ground 2 Input 3 Ground 4 Case Ground 5 Output Ground 7 Output 6 Output 7 Ground 8 Case Ground www.RFM.com E-mail: [email protected] ©2008 by RF Monolithics, Inc. 1 82 nH 82 nH 6 5 8 4 2 Input 3 Page 3 of 3 RF1432C - 3/21/08