www.rfm.com e-mail: info@rfm.com page 1 of 5 ?2009 by rf monolithics, inc. SF2172C - 7/7/09 1. unless noted otherwise, all specifications apply over the operating temperature range with filter soldered to the specified d emonstration board with impedance matching to 50 ? and measured with 50 ? network analyzer. 2. rejection is measured as attenuation below the minimum il point in the passband. rejection in final user application is depen dent on pcb layout and external impedance matching design. see application note no. 42 for details. 3. the design, manufacturing process, and specifications of this filter are subject to change. 4. tape and reel standard ansi / eia 481. 5. either port 1 or port 2 may be used for either input or output in the design. however, impedances and impedance matching may vary between port 1 and port 2, so that the filter must always be installed in one direction per the circuit design. 6. us and international patents may apply. 7. rfm, stylized rfm logo, and rf monolithics, inc. are registered trademarks of rf monolithics, inc. electrical characteristics characteristic sym notes min typ max units nominal center frequency f c 1 280 mhz insertion loss il min 18.811db passband ripple, f c 7.5 mhz 1 0.4 1.0 db p-p passband rippl2, f c (7.5 to 8.5) mhz 0.7 2.0 db p-p 1 db bandwidth bw 1 1 15 19.8 mhz group delay deviation, f c 7.5 mhz 1 24 50 ns 40 db bandwidth 29.5 31.0 mhz attenuation referenced to il min fc (15 to 17) mhz 10 40 db fc (17 to 100) mhz 40 45 db operating temperature range -40 85 c case style sm5050-8 5 x 5 mm nominal footprint lid symbolization (y=year, ww=week, s=shift) rfm 852 ywws sm5050-8 ? low insertion loss 5.0 x 5.0 mm surface-mount case single ended input and output complies with directive 2002/95/ec (rohs) absolute maximum ratings rating value units maximum incident power in passband +13 dbm maximum dc voltage between any two terminals 30 vdc storage temperature range -40 to +85 c suitable for lead-free soldering - maximum soldering temperature 260c for 30 s 280 mhz saw filter SF2172C pb caution: electrostatic sensitive device. observe precautions for handling. notes: preliminary
www.rfm.com e-mail: info@rfm.com page 2 of 5 ?2009 by rf monolithics, inc. SF2172C - 7/7/09 ch 1 s 11 1 u fs centr 28 0 . 000 m hz spa n 200 . 0 00 m hz cor ch2 s2 1 lo g 10 db/ re f - 40 d b center 280 . 0 00 00 0 mh z span 2 00 . 00 0 000 m h z cor ch3 s22 1 u fs centr 280 . 000 mhz span 200 . 000 mhz cor 24 o ct 2 008 0 8:05:0 5 1 1: 24 .943 - 10 . 939 51 . 96 0 pf 280 . 000 000 mhz 1 2 3 4 1: 0. 0000 db 0. 000 000 mhz max ref=1 ch 2 m ar ker s bw : 19 . 4 786 00 mhz cen t : 27 9 . 799 57 3 m hz q: 1 4 . 364 1 _ loss : -9 . 05 32 db ch2 pass 1 1: 21 . 977 -5 9 . 4 55 9 . 5603 pf 2 80 . 00 0 000 m h z sf2 172c rfm demo fu ll 2-port cal -1 db bw full full frequency response and smith charts
www.rfm.com e-mail: info@rfm.com page 3 of 5 ?2009 by rf monolithics, inc. SF2172C - 7/7/09 c h1 s2 1 d el 50 ns/ re f 400 n s cor sm o ch2 s2 1 lo g 1 d b/ re f -1 0 d b center 280 . 0 00 00 0 m hz span 30 . 0 00 00 0 mhz cor 24 o ct 20 08 08 :16:1 2 1 2 3 2 : -5 . 7220 ns -15 . 000 000 mhz ref = 3 ch1 markers me an : 4 36 . 23 n s s . dev : 3 . 1525 ns p-p : 12 . 258 ns 1 2 3 2 : . 10540 db -15 . 000 000 mhz ref = 3 ch2 markers mean : -8 . 8777 db s . dev : . 09710 db p-p :.42720 db SF2172C rfm demo full 2- port cal full full passband response
www.rfm.com e-mail: info@rfm.com page 4 of 5 ?2009 by rf monolithics, inc. SF2172C - 7/7/09 case dimension electrical connection dimension mm inches min nom max min nom max a 4.8 5.0 5.2 0.1968 b 4.8 5.0 5.2 0.1968 c 1.7 0.0669 d 2.08 0.0818 e 1.17 0.046 f 0.64 0.0252 g 2.39 2.54 2.69 0.100 connection term inals port 1 input 3 port 2 output 7 ground all others dot indicates pin 1 materials solder pad plating 0.3 to 1.0 m gold over 1.27 to 8.89 m nickel lid plating 2.0 to 3.0 m nickel body al 2 o 3 ceramic pb free 8-terminal ceramic surface-mount case 5.0 x 5.0 mm nominal footprint sm5050-8 case and test circuit top view bottom view a 1 2 3 b 7 6 5 4 c d 7 6 5 4 e f g 1 2 3 8 8
www.rfm.com e-mail: info@rfm.com page 5 of 5 ?2009 by rf monolithics, inc. SF2172C - 7/7/09 tape and reel specifications ?b? nominal size quantity per reel inches millimeters 7 178 500 pcs 13 330 3,000 pcs ro.3 (max.) 1.4 section a-a 0.3 section b-b 3.35 2.0 4.0 3.35 8.0 b b a r0.5 (typ.) a 5 . 5 1 2 . 0 1 . 7 5 1.5 1.5 pin #1 user direction of feed component orientation see detail "a" 1 3 . 0 2 0 . 2 2.0 12.0 1 0 0 r e f . " b " r e f . detail ?a?
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