? rf monolithics, inc. phone: (972) 233-2903 fax: (972) 387-8148 e-mail: info@rfm.com page 1 of 2 rfm europe phone: 44 1963 251383 fax: 44 1963 251510 http://www.rfm.com ?1999 by rf monolithics, inc. the stylized rfm logo are registered trademarks of rf monolithics, inc. RF1302-062702 electrical characteristics characteristic sym notes minimum typical maximum units nominal frequency f c 2, 4, 5, 6 439.250 mhz insertion loss il 3, 4, 7 4.0 db 4 db passband bw 3 2, 3, 4, 7 30 khz 3 db reject band bw 3 2, 3, 4, 7 khz rejection at f c 1.50 mhz 4 10 db at f c 6.0 mhz 25 at f c 50 mhz temperature operating case temperature t c 3, 7, 8 -40 +85 c turnover temperature t o 15 25 40 c turnover frequency f o f c mhz frequency temperature coefficient ftc 0.032 ppm/c 2 frequency aging absolute value during the first year ifai 3 10 ppm/yr external impedance series inductance l 1, 7 22 nh shunt capacitance c 5-18 pf lid symbolization (in addition to lot and/or date codes) rfm RF1302 to39-3 case ? ideal front-end filter for european wireless receivers ? low-loss, coupled-resonator quartz design ? simple external impedance matching ? rugged to39 hermetic package ? complies with directive 2002/95/ec (rohs) the RF1302 is a low-loss, compact and economical surface-acoustic-wave (saw) filter designed to provide front-end selectivity in 439.250mhz receivers. typical applications of these fsk receivers are wireless remote-control and security devices operating in europe. 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 frequen- cy stability over a wide temperature range. 439.250 mhz saw filter RF1302 caution: electrostatic sensitive device. observe precautions for handling. notes: 1. typical test circuit is shown for to-39 rf filters. 2. passband and reject bands are specified in reference to f c . 3. all characteristics are specified over the operating temperature range and typical aging for 10 years. 4. unless noted otherwise, all measurements are made with the filter installed in the specified test fixture. note that insertion l oss, bandwidth, and pass- band shape are dependent on the impedance matching component values and quality. demonstration circuits are available for confir mation of device performance. 5. one or more of the following u.s. patents apply: 4,454,488; 4,616,197; and other pending. 6. all equipment designs utilizing this product must be approved by the appropriate government agency prior to manufacture or sale. 7. the design, manufacturing process, and specifications of this device are subject to change without notice. 8. the turnover temperature, t o , is the temperature of maximum (or turnover) frequency, f o . the nominal frequency at any case temperature, t c , out- side the operating temperature range may be calculated from: f=f o [1-ftc (t o -t c ) 2 ]. pb
439.250 mhz saw filter rf monolithics, inc. phone: (972) 233-2903 fax: (972) 387-8148 e-mail: info@rfm.com page 2 of 2 rfm europe phone: 44 1963 251383 fax: 44 1963 251510 http://www.rfm.com ?1999 by rf monolithics, inc. the stylized rfm logo are registered trademarks of rf monolithics, inc. RF1302-062702 absolute maximum ratings typical filter response typical filter responses are shown below. illustrated frequencies and mini- mum rejection for lo and image are shown only for superhet receivers with 10.7 mhz if. electrical connections typical test circuit case design rating value units incident rf power +13 dbm dc voltage between any two pins (observe esd precautions) 30 vdc case temperature -40 to +85 c lo 0 -10 -20 -30 -40 -50 -60 -70 -80 5 mhz/div frequency image amplitude response bottom view pin 1 pin 2 pin 3 pin connection 1 input or output 2 output or input 3 case ground l c c l 2 3 1 from 50 network analyzer w to 50 w network analyzer dimensions millimeters inches min max min max a 9.40 0.370 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 h 1.02 0.040 j 1.40 0.055 0 db -1 -2 -3 -4 -5 -6 -7 -8 150 khz/div frequency amplitude response min 3db passband at 25 c o b 45 j (2 places) d (3 places) h g e f c a
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