www.rfm.com e-mail: info@rfm.com page 1 of 3 ?2009 by rf monolithics, inc. SF1222D - 8/18/09 electrical characteristics, transmitter-antenna characteristic sym notes min typ max units center frequency f c 2010.0 mhz insertion loss, 2000.0 to 2020.0 mhz il 3.0 db amplitude ripple, 2000.0 to 2020.0 mhz 1.0 db p-p vswr, 2000.0 to 2020.0 mhz 2.3:1 attenuation relative to 0 dbm 1559.0 to 1610.0 mhz 35 db 1980.0 mhz 2 1995.0 mhz 1.5 2180.0 to 2200.0 mhz 40 input impedance (antenna) z s 50 || shunt coil ? output impedance, (tx and rx) z l 50 || series or shunt coil case style sm3838-12 3.8 x 3.8 mm nominal footprint lid symbolization (y=year, ww=week, s=shift) dot=pin 1 indicator 935, 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 input power level, antenna in tx band and tx in tx band 25 dbm input power level, rx in rx band 20 dbm dc voltage 3 v operating temperature range -30 to +85 c storage temperature range in tape and reel -40 to +85 c 2010/2190 mhz saw duplexer SF1222D 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 3 ?2009 by rf monolithics, inc. SF1222D - 8/18/09 electrical characteristics, receiver-antenna, transmitter-receiver isolation characteristic sym notes min typ max units center frequency f c 2190.0 mhz insertion loss, 2180.0 to 2200.0 mhz il 3.0 db amplitude ripple, 2180.0 to 2200.0 mhz 1.0 db p-p vswr, 2180.0 to 2200.0 mhz 2.3:1 attenuation relative to 0 dbm 2000.0 to 2020.0 mhz 40 db 2110.0 to 2155.0 mhz 3 2400.0 mhz 40 transmitter-receiver isolation 2000.0 to 2020.0 mhz 40 db 2180.0 to 2200.0 mhz 40 duplexer package
www.rfm.com e-mail: info@rfm.com page 3 of 3 ?2009 by rf monolithics, inc. SF1222D - 8/18/09 duplexer response 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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