www.rfm.com e-mail: info@rfm.com page 1 of 3 ?2009 by rf monolithics, inc. RF3700D(r) - 6/25/09 electrical characteristics characteristic sym notes minimum typical maximum units center frequency at 25 c f c 1, 2, 3 372.00 mhz insertion loss il min 1, 3 1.8 3.0 db 3 db bandwidth bw 3 1, 3 400 500 600 khz rejection attenuation: (relative to il min ) 10 - 354 mhz 1, 3 52 57 db 354 - 364 mhz 37 42 364 - 369 mhz 10 15 369 - 370 mhz 15 20 374 - 378 mhz 25 30 378 - 380 mhz 9 14 380 - 382 mhz 24 29 382 - 389 mhz 28 33 389 - 550 mhz 43 48 550 - 1000 mhz 61 66 operating temperature range -40 +90 c frequency temperature coefficient ftc 0.032 ppm/c 2 frequency aging, absolute value during the first year |fa| 5 10 ppm/yr impedance @ f c input z in = r in ll c in z in 1 1.8 k ? || 1.68 pf output z out = r out ll c out z out 2.5 k ? || 1.5 pf lid symbolization (y=year ww=week s=shift) 916 // 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 RF3700D is a low-loss, compact, and economical surface-acoustic-wave (saw) filter designed to provide front-end selectivity in 372.00 mhz receivers. receiver designs using this filter include superheterodyne with 10.7 mhz or 500 khz ifs, direct conversion receivers and superregenerative receives. typical applications for 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 in superheterodyne receivers with 10.7 mhz ifs. rfm?s advanced saw design and fabrication technology is utilized to achieve high performance and very low loss with simple external impedance matching. 372.00 mhz saw filter RF3700D 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 ? 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 3 db frequencies. 3. where noted specifications apply over the entire specified operating temperature range of -40 to +90 c. 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 +65 c or less. aging may exceed the specification for prol onged temperatures above +65 c. 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
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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 ? 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 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 soldering temperature, 10 seconds / 5 cycles maximum 260 c
www.rfm.com e-mail: info@rfm.com page 3 of 3 ?2009 by rf monolithics, inc. RF3700D(r) - 6/25/09 RF3700D response RF3700D pass-band response
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