tel: +86-23-62808818 fax: +86-23-62808382 www.sipatsaw.com / sawmkt@sipat.com part number LBT87502 rev. date 2008-07-29 sipat co., ltd. ( cetc no.26 research institute ) #14 nanping huayuan road, chongqing, china, 400060 ver. 1.0 page 1/3 c c h h i i n n a a e e l l e e c c t t r r o o n n i i c c s s t t e e c c h h n n o o l l o o g g y y g g r r o o u u p p c c o o r r p p o o r r a a t t i i o o n n n n o o . . 2 2 6 6 r r e e s s e e a a r r c c h h i i n n s s t t i i t t u u t t e e 874.55mhz saw filter 9mhz bandwidth s s i i p p a a t t c c o o . . , , l l t t d d . . w w w w w w . . s s i i p p a a t t s s a a w w . . c c o o m m part number: LBT87502 features ? for rf saw filter ? single-ended operation ? ceramic surface mount package ? small size ? no matching required for operation at 50 ? ? rohs compliant (2002/95/ec), pb-free specifications parameter unit minimum typical maximum center frequency mhz - 874.55 - insertion loss db - 1.7 3.5 1.5 db bandwidth mhz 9.2 15.12 - passband variation(870 879.1mhz) db - 0.4 1.5 absolute delay usec - 0.06 - input/output vswr(870 879.1mhz) - - 1.27/1.22 2.5 0 850mhz db 35 44 - 850 859mhz db 10 40 - 888 893mhz db 10 12 - 893 902mhz db 30 32 - ultimate rejection 902 2000mhz db 34 39 - material temperature coefficient khz/c -27.99 substrate material - 42lt ambient temperature c 25 operating temperature range c -40 - +85 storage temperature range c -45 - +105 dc voltage v 0 input power dbm - - 10 esd class - 1a package size smd3.8*3.8 notes: 1. all specifications are based on the test circuit shown; 2. in production, all specifications are measured by ag ilent network analyzer and full 2 port calibration at room temperature; 3. electrical margin has been built into the design to account for the variations due to temperature drift and manufacturing tolerances; 4. this is the optimum impedance in order to achieve the performance show.
tel: +86-23-62808818 fax: +86-23-62808382 www.sipatsaw.com / sawmkt@sipat.com part number LBT87502 rev. date 2008-07-29 sipat co., ltd. ( cetc no.26 research institute ) #14 nanping huayuan road, chongqing, china, 400060 ver. 1.0 page 2/3 c c h h i i n n a a e e l l e e c c t t r r o o n n i i c c s s t t e e c c h h n n o o l l o o g g y y g g r r o o u u p p c c o o r r p p o o r r a a t t i i o o n n n n o o . . 2 2 6 6 r r e e s s e e a a r r c c h h i i n n s s t t i i t t u u t t e e 874.55mhz saw filter 9mhz bandwidth s s i i p p a a t t c c o o . . , , l l t t d d . . w w w w w w . . s s i i p p a a t t s s a a w w . . c c o o m m part number: LBT87502 matching configuration source/load impedance=50 ohm notes - component values may change depending on board layout. package dimension package: smd3.8*3.8 unit: mm pad configuration: input: 2 output: 5 ground: all others marking configuration: 1) ?: pad number 1 index 2) sipat: manufacturer name 3) 87502: part number 4) xxyy: date(year/month) 5) zz: identified code input output 50 50 1.80 0.60 1.90 1.5max 3.80 0.2 3.80 0.2 12 3 5 4 6 1 2 3 6 5 4 sipat 87502 xxyyzz
tel: +86-23-62808818 fax: +86-23-62808382 www.sipatsaw.com / sawmkt@sipat.com part number LBT87502 rev. date 2008-07-29 sipat co., ltd. ( cetc no.26 research institute ) #14 nanping huayuan road, chongqing, china, 400060 ver. 1.0 page 3/3 c c h h i i n n a a e e l l e e c c t t r r o o n n i i c c s s t t e e c c h h n n o o l l o o g g y y g g r r o o u u p p c c o o r r p p o o r r a a t t i i o o n n n n o o . . 2 2 6 6 r r e e s s e e a a r r c c h h i i n n s s t t i i t t u u t t e e 874.55mhz saw filter 9mhz bandwidth s s i i p p a a t t c c o o . . , , l l t t d d . . w w w w w w . . s s i i p p a a t t s s a a w w . . c c o o m m part number: LBT87502 typical performance frequency respond passband respond 780 800 820 840 860 880 900 920 940 960 -91.7255 -81.7255 -71.7255 -61.7255 -51.7255 -41.7255 -31.7255 -21.7255 -11.7255 -1.7255 8.2745 type performance frequency(mhz) magnitude(db) 860 865 870 875 880 885 890 895 -4.2255 -3.7255 -3.2255 -2.7255 -2.2255 -1.7255 -1.2255 -0.7255 -0.2255 type performance frequency(mhz) amplitude ripple(db) horizontal: 20mhz/div vertical: 10db/div horizontal: 5mhz/div vertical: 0.5db/div group delay variation(f04.5mhz) phase linearity(f04.5mhz) 866 868 870 872 874 876 878 880 882 884 -100 -50 0 50 100 150 200 x: 874.5 y: 53.43 type performance frequency(mhz) group delay time(ns) x: 879 y: 55.09 x: 870 y: 72.74 866 868 870 872 874 876 878 880 882 884 -50 -40 -30 -20 -10 0 10 20 30 40 x: 879 y: 2.91 type performance frequency(mhz) degree(deg) x: 870 y: 2.482 x: 874.5 y: -2.525 horizontal: 2mhz/div vertical: 50ns/div horizontal: 2mhz/div vertical: 10deg/div smith chart s11 smith chart s22 0.2 0.5 1.0 2.0 5.0 +j0.2 -j0.2 +j0.5 -j0.5 +j1.0 -j1.0 +j2.0 -j2.0 +j5.0 -j5.0 0.0 0.2 0.5 1.0 2.0 5.0 +j0.2 -j0.2 +j0.5 -j0.5 +j1.0 -j1.0 +j2.0 -j2.0 +j5.0 -j5.0 0.0
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