www.rfm.com e-mail: info@rfm.com page 1 of 2 ?2008 by rf monolithics, inc. RF1414D - 3/21/08 electrical characteristics characteristic sym notes minimum typical maximu m units center frequency at 25c absolute frequency f c 1, 2, 3 372.500 mhz insertion loss il min 1, 3 2.1 3.0 db 3 db bandwidth bw 3 1, 3 350 500 khz rejection attenuation: (relative to ilmin) 10 - 354 mhz 1, 3 45 50 db 354 - 364 mhz 35 40 364 - 369 mhz 25 30 369 - 370 mhz 14 15 374 - 378 mhz 25 30 378 - 380 mhz 15 20 380 - 382 mhz 20 25 382 - 389 mhz 25 28 389 - 550 mhz 45 50 550 - 1000 mhz 40 45 temperature freq. temp. coefficient ftc 0.032 ppm/c 2 frequency aging absolute value during the first year |fa| 5 10 ppm/yr impedance @ fc input z in = r in llc in z in 1 27.8 // 2.3 pf output z out = r out llc out z out 41 // 2.3 pf lid symbolization (y=year ww=week s=shift) 528 // ywws standard reel quantity reel size 7 inch 9 500 pieces/reel reel size 13 inch 3000 pieces/reel ? 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) the RF1414D is a low-loss, compact, and economical surface-acoustic-wave (saw) filter designed to provide front-end selectivity in 372.500 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. 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. rfms advanced saw design and fabrication technology is utilized to achieve high performance and very low loss with simple external impedance matching. 372.500 mhz saw filter RF1414D sm3838-8 case 3.8 x 3.8 caution: electrostatic sensitive device. observe precautions for handling. notes: 1. unless noted otherwise, all measurements are made with the filter installed in the specified test fixture which is connected to a 50 w test system with vswr 1.2:1. the test fixture l and c are adjusted for minimum insertion loss at the filter center frequency, f c . note that insertion loss and band- width and passband shape are dependent on the impedance matching component values and quality. 2. the frequency f c is defined as the midpoint between the 3db frequencies. 3. where noted specifications apply over the entire specified operating temperature range of -40c to +90c. 4. the turnover temperature, t o , is the temperature of maximum (or turnover) frequency, f o . the nominal frequency at any case temperature, t c , may be calculated from: f = f o [1 - ftc (t o -t c ) 2 ]. 5. frequency aging is the change in fc with time and is specified at +65c or less. aging may exceed the specification for prolo nged temperatures above +65c. typically, aging is greatest the first year after manufacture, decreasing significantly in subsequent years. 6. the design, manufacturing process, and specifications of this device are subject to change. 7. one or more of the following u.s. patents apply: 4,54,488, 4,616,197, and others pending. 8. all equipment designs utilizing this product must be approved by the appropriate government agency prior to manufacture or sa le. 9. tape and reel standard per ansi / eia 481. pb
www.rfm.com e-mail: info@rfm.com page 2 of 2 ?2008 by rf monolithics, inc. RF1414D - 3/21/08 1 2 3 8 input output 7 6 5 4 51 nh 51 nh 7 6 5 4 1 2 3 8 input output 51 nh 51 nh pin connection 1 input 2 input ground 3 ground 4 case ground 5 output 6 output ground 7 ground 8 case ground matching circuit to 50 w electrical connections a 1 2 3 b 7 6 5 4 c h 7 6 5 4 e f g 1 2 3 8 8 d pin connection 1 input ground 2 input 3 input ground 4 case ground 5 output ground 6 output 7 output ground 8 case ground optional electrical connections matching circuit to 50 w case dimensions dimension mm inches min nom max min nom max a 3.6 3.8 4.0 0.14 0.15 0.16 b 3.6 3.8 4.0 0.14 0.15 0.16 c 1.00 1.20 1.40 0.04 0.05 0.055 d 0.95 1.10 1.25 0.033 0.043 0.05 e 0.90 1.0 1.10 0.035 0.04 0.043 f 0.50 0.6 0.70 0.020 0.024 0.028 g 2.39 2.54 2.69 0.090 0.100 0.110 h 1.40 1.75 2.05 0.055 0.069 0.080 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 soldering temperature (10 seconds / 5 cycles max.) 260 c
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