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  www.rfm.com e-mail: info@rfm.com page 1 of 2 ?2008 by rf monolithics, inc. RF3336 - 3/21/08 electrical characteristics characteristic sym notes minimum typical maximum units center frequency at 25c absolute frequency f c 1, 2 868.225 868.475 mhz tolerance from 868.35 mhz d f c 125 khz insertion loss il 1 2.6 5 db 3 db bandwidth bw 3 1,2 600 1000 khz rejection at f c - 21.4 mhz (image) 1 33 db at f c - 10.7 mhz (lo) 15 ultimate 80 temperature operating case temp. t c 3, 4 -40 +85 c turnover temperature t o 10 25 40 c turnover frequency f o f c mhz freq. temp. coefficient ftc 0.032 ppm/c 2 frequency aging absolute value during the first year |fa| 5 10 ppm/yr external impedance series inductance l 1 10 l 2 12 nh shunt capacitance c 1 1 c 2 1 pf lid symbolization (in addition to lot and/or date codes) rfm RF3336 to39-3 case ? ideal front-end filter for 868.35 mhz wireless receivers ? low-loss, coupled-resonator quartz design ? simple external impedance matching ? rugged to39 hermetic package ? complies with directive 2002/95/ec (rohs) the RF3336 is a low-loss, compact, and economical surface-acoustic-wave (saw) filter designed to provide front-end selectivity in 868.35 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 the usa under fcc part 15 and in canada under doc rss-210. 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 (not included). quartz construction provides excellent frequency stability over a wide temperature range. 868.35 mhz saw filter RF3336 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, bandwidth, 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. unless noted otherwise, specifications apply over the entire specified operating temperature range. 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 without notice. 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. pb
www.rfm.com e-mail: info@rfm.com page 2 of 2 ?2008 by rf monolithics, inc. RF3336 - 3/21/08 absolute maximum ratings 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 5 -40 to +85 c soldering temperature (10 seconds / 5 cycles max.) 260 c bottom view pin 1 pin 2 pin 3 pin connection 1 input or output 2 output or input 3 case ground l cc l 2 3 1 from 50 network analyzer w to 5 0 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 b 45 j (2 places) d (3 places) h g e f c a


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