www.rfm.com e-mail: info@rfm.com page 1 of 6 ?2009 by rf monolithics, inc. SF1223D - 9/21/09 electrical characteristics, transmitter, 842.0 mhz characteristic sym notes min typ max units center frequency f c 842.0 mhz insertion loss, 832.0 to 852.0 mhz il 2.0 3.0 db amplitude ripple, 832.0 to 852.0 mhz 0.8 1.5 db p-p vswr, 832.0 to 852.0 mhz 1.6:1 2.2:1 attenuation referenced to 0 db, 790.0 to 810.0 mhz 45 50 db input impedance (antenna) z s 50 (l-c match) ? output impedance, (tx and rx) z l 50 (l-c match) case style sm3838-12 3.8 x 3.8 x 1.45 mm nominal footprint lid symbolization (y=year, ww=week, s=shift) dot=pin 1 indicator 939, ywws standard reel quantity reel size 7 inch 1000 pieces/reel reel size 13 inch 3000 pieces/reel ? surface mount 3.8 x 3.8 x 1.4 mm package complies with directive 2002/95/ec (rohs) absolute maximum ratings rating value units cw input power level, 50,000 hours, +50 c 0.5 w dc voltage 0 v operating temperature range -30 to +85 c storage temperature range in tape and reel -40 to +85 c 800/842 mhz saw duplexer SF1223D 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. 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. 7. us and international patents may apply. 8. rfm, stylized rfm logo, and rf monolithics, inc. are registered trademarks of rf monolithics, inc pb caution: electrostatic sensitive device. observe precautions for handling. notes: preliminary
www.rfm.com e-mail: info@rfm.com page 2 of 6 ?2009 by rf monolithics, inc. SF1223D - 9/21/09 electrical characteristics, receiver, 800.0 mhz characteristic sym notes min typ max units center frequency f c 800.0 mhz insertion loss, 790.0 to 810.0 mhz il 1.8 2.5 db amplitude ripple, 790.0 to 810.0 mhz 0.8 1.5 db p-p vswr, 790.0 to 810.0 mhz 1.7:1 2.2:1 attenuation, 832.0 to 852.0 mhz 45 50 db receiver-transmitter isolation: 790.0 to 810.0 mhz 45 50 db 832.0 to 852.0 mhz 45 50 duplexer package
www.rfm.com e-mail: info@rfm.com page 3 of 6 ?2009 by rf monolithics, inc. SF1223D - 9/21/09 receiver port to antenna port amplitude response transmitter port to receiver port amplitude response
www.rfm.com e-mail: info@rfm.com page 4 of 6 ?2009 by rf monolithics, inc. SF1223D - 9/21/09 receiver port -transmitter port isolation plot receiver port smith chart and vswr plots
www.rfm.com e-mail: info@rfm.com page 5 of 6 ?2009 by rf monolithics, inc. SF1223D - 9/21/09 transmitter port smith chart and vswr plots antenna port smith chart and vswr plots
www.rfm.com e-mail: info@rfm.com page 6 of 6 ?2009 by rf monolithics, inc. SF1223D - 9/21/09 duplexer test circuit k is the antenna port b is the receiver port h is the transmitter port all other package pads are ground
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