www.rfm.com e-mail: info@rfm.com page 1 of 5 ?2009 by rf monolithics, inc. SF2143A - 2/2/09 electrical characteristics tdm1 filter characteristic sym notes min typ max units nominal center frequency f c 1 72.54 mhz 1 db bandwidth bw 1 3.7 4.3 mhz 15 db bandwidth bw 15 5.5 6.7 mhz 30 db bandwidth bw 30 6.0 7.7 mhz passband minimum insertion loss including the matching network il min 15.3 18 db amplitude ripple, f c 1.85 mhz 0.7 db p-p attenuation relative to il min 50.00 to 66.48 mhz 40 49 db 66.48 to 68.08 mhz 37 42 db 77.30 to 78.60 mhz 37 40 db 78.60 to 86.50 mhz 40 45 db 86.50 to 91.50 mhz 45 61 db 91.50 to 100.0 mhz 45 66 db group delay ripple 83 ns p-p source impedance (differential) 27 ohms or 200 ohms load impedance (differential) 1k ohms or 1.5k ohms tdm2 filter characteristic sym notes min typ max units nominal center frequency f c 1 80.46 mhz 1 db bandwidth bw 1 3.7 4.3 mhz 15 db bandwidth bw 15 5.5 6.7 mhz 30 db bandwidth bw 30 6.4 7.7 mhz passband minimum insertion loss including the matching network il min 15.7 19.5 db amplitude ripple, f c 1.85 mhz 1.5 db p-p attenuation relative to il min 50.00 to 74.39 mhz 34 41 db 74.39 to 75.99 mhz 30 35 db 85.21 to 86.50 mhz 40 42 db 86.50 to 91.50 mhz 43 44 db 91.50 to 100.0 mhz 45 56 db group delay ripple 120 ns p-p source impedance (differential) 27 ohms or 200 ohms load impedance (differential) 1k ohms or 1.5k ohms case style 6 sm11453 11.4 x 5.3 mm nominal footprint lid symbolization (yy=year, ww=week, s=shift) see note 4 rfm SF2143A yywws 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. unless noted otherwise, all frequency specifications are referenced to the nominal center frequency, fc. 3. rejection is measured as attenuation below the minimum il point in the passband. rejection in final user application is depe ndent on pcb layout and external impedance matching design. see application note no. 42 for details. 4. "lrip" or "l" after the part number indicates "low rate initial production" and "eng" or "e" indicates "engineering prototype s." 5. the design, manufacturing process, and specifications of this filter are subject to change. 6. tape and reel standard ansi / eia 481. 7. 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. 8. us and international patents may apply. 9. rfm, stylized rfm logo, and rf monolithics, inc. are registered trademarks of rf monolithics, inc. 10. ?copyright 2009, rf monolithics inc. sm11453-10 ? designed for sdars if receiver saw diplexer 72.54 / 80.46 mhz 11.4 x 5.3 mm surface-mount case complies with directive 2002/95/ec (rohs) absolute maximum ratings rating value units maximum incident power in passband +10 dbm maximum dc voltage between any two terminals 0 vdc operating temperature range -40 to +105 c 72.54/80.46 mhz saw diplexer SF2143A 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. SF2143A - 2/2/09 SF2143A tdm1 filter response SF2143A tdm2 filter response
www.rfm.com e-mail: info@rfm.com page 3 of 5 ?2009 by rf monolithics, inc. SF2143A - 2/2/09
matching circuit:
www.rfm.com e-mail: info@rfm.com page 4 of 5 ?2009 by rf monolithics, inc. SF2143A - 2/2/09 5 . 0 8 2 . 5 4 1 . 1 2 0 . 7 9 2.54 1.88 5.30 1 1 . 4 0 1.20 plating 15-40uins gold to mil-g-45204, type 3, grade a, over 80-200uins nickel to fed spec. qq-n-290. 1 2 3 4 5 6 7 8 9 10 sm11453-10 case electrical connections connection terminals port 1 input 9, 10 port 2 tdm1 5, 6 port 3 tdm2 3, 4 gound all others 10-terminal ceramic surface-mount case 11.4 x 5.3 mm nominal footprint all dimensions in mm
www.rfm.com e-mail: info@rfm.com page 5 of 5 ?2009 by rf monolithics, inc. SF2143A - 2/2/09 tape and reel specifications ?b ? quantity per reel inches millimeters 7 178 500 13 330 2000 user direction of feed component orientation and dimensions carrier tape dimensions ao 5.5 mm bo 7.5 mm ko 2.0 mm pitch 8.0 mm w 16.0 mm pin #1 see detail "a" 1 3 . 0 2 0 . 2 2.0 12.0 1 0 0 r e f . " b " r e f . 16.0
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