RF3446E • 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) 433.92 MHz SAW Filter Pb The RF3446E is a low-loss, compact, and economical surface-acoustic-wave (SAW) filter designed to provide front-end selectivity in 433.92 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. SM3030-6 Case 3.0 x 3.0 Electrical Characteristics Characteristic Center Frequency at 25°C Absolute Frequency Passband Ripple 433.90 to 433.94 MHz Insertion Loss (433.760 - 434.080) 3 dB Bandwidth Rejection Attenuation: (relative to ILmin) Sym Notes fc 1, 2, 3 ILMIN 1, 3 BW3 1, 3 10 - 418 MHz Typical dB 2.0 3.0 dB 960 1080 1150 kHz 47 50 44 47 36 16 19 18 21 438.5 - 446 MHz 21 24 446 - 452 MHz 38 41 45 48 452 - 1000 MHz To Turnover Temperature Temperature Freq. Temp. Coefficient FTC Frequency Aging Absolute Value during the First Year |fA| Impedance @ fc Input ZIN = RINllCIN ZIN Output ZOUT = ROUTllCOUT ZOUT 3, 4 5 1 Lid Symbolization (Y=year WW=week S=shift) Reel Size 7 Inch Reel Size 13 Inch MHz 1.2 33 1, 3 Units 0.5 423.7 - 430 MHz 436 - 438.5 MHz Maximum 433.92 418 - 423.7 MHz 430 - 432.5 MHz Standard Reel Quantity Minimum 10 25 dB 40 °C 0.032 ppm/°C2 ≤10 ppm/yr 130 Ω || 2.5 pF 134.5 Ω || 2.48 pF 776 // 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°C 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 Per ANSI / EIA 481. www.RFM.com E-mail: [email protected] ©2009 by RF Monolithics, Inc. Page 1 of 3 RF3446E - 2/6/09 433.92 MHz SAW Filter 5 Feb 2009 12 :02:45 CH1 S2 1 L OG 10 dB/ 1 : -2 . 039 1 REF 0 d B dB 43 3 . 9 20 000 MHz RF 3446 E DEMO 1 1 C or R esp CENTER 43 3 . 9 20 000 MHz SPAN 100 . 00 0 0 00 MHz 5 Feb 2009 11:57:55 C H1 S11 1 U FS 1 : 53 . 338 3. 15 23 433 . 920 000 MHz RF3446E 1 . 1562 CH3 S22 1 : 56 . 678 433 . 920 nH 000 1 U FS 6 . 1484 MHz 2 . 2551 nH DEMO 1 1 1 Cor Cor F ull CENT R C H2 433 . 920 S21 MHz SPAN LO G 2 . 000 1 dB/ CENTR MHz 433 . 920 1 : 0 . 0000 REF -3 dB MH z dB SPAN 0 . 000 2 . 000 000 MHz MHz CH2 Max 1 Cor BW : F ull cent : Markers REF= 1 1 . 109202 MHz 433 . 992586 MHz 2 Q : 391 . 27 1_ loss 3 START www.RFM.com E-mail: [email protected] ©2009 by RF Monolithics, Inc. 4 32 . 920 000 : -1 . 9577 dB 4 MHz STOP 434 . 920 000 MHz Page 2 of 3 RF3446E - 2/6/09 433.92 MHz SAW Filter Absolute Maximum Ratings Rating Value Units 10 dBm Input Power Level DC Voltage 12 VDC Storage Temperature -40 to +125 °C Operable Temperature Range -40 to +105 °C 260 °C Soldering Temperature (10 seconds/5 cycles Max..) B Electrical Connections Pin Connection 1 Input 2 Input Return 3 Ground 4 Output 5 Output Return 6 Ground G C 1 6 A 2 5 3 4 E F H 6 1 5 2 4 3 D I J Case Dimensions Dimension Matching Circuit to 50 Ω 43 nH 6 1 6.8 pF 5 2 4 3 47 nH Output Input A B C D E F G H I J Min 2.87 2.87 1.12 0.77 2.67 1.47 0.72 1.37 0.47 1.17 mm Nom 3.0 3.0 1.25 0.90 2.80 1.6 0.85 1.5 0.60 1.30 Max 3.13 3.13 1.38 1.03 2.93 1.73 0.98 1.63 0.73 1.43 Min 0.113 0.113 0.044 0.030 0.105 0.058 0.028 0.054 0.019 0.046 Inches Nom 0.118 0.118 0.049 0.035 0.110 0.063 0.033 0.059 0.024 0.051 Max 0.123 0.123 0.054 0.040 0.115 0.068 0.038 0.064 0.029 0.056 5.0 pF www.RFM.com E-mail: [email protected] ©2009 by RF Monolithics, Inc. Page 3 of 3 RF3446E - 2/6/09