tel: +86-23-62808818 fax: +86-23-62808382 www.sipatsaw.com / sales@sipat.com part number LBT25004 rev. date 2010-12-24 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 250mhz saw filter 3mhz 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: LBT25004 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 - 250 - insertion loss db - 2.2 3 1 db bandwidth mhz 2.5 3.14 - 3 db bandwidth mhz 3.2 3.99 - passband variation(248.75 251.25mhz) db - 1 1.5 absolute delay usec - 0.33 - 1 239mhz db 35 54 - ultimate rejection 260 300mhz db 35 50 - material temperature coefficient khz/c -8.0 substrate material - 36lt ambient temperature c 25 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 / sales@sipat.com part number LBT25004 rev. date 2010-12-24 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 250mhz saw filter 3mhz 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: LBT25004 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: 6 ground: all others marking configuration: 1) ?: pad number 1 index 2) sipat: manufacturer name 3) 25004: part number 4) xxyy: date(year/month) 5) zz: identified code input output 50 50 0.60 1.27 1.50 0.25 3.80 0.15 3.80 0.15 12 3 6 5 7 1 2 3 7 6 5 25004 xxyyzz 8 4 4 8 1.00 0.15 sipat
tel: +86-23-62808818 fax: +86-23-62808382 www.sipatsaw.com / sales@sipat.com part number LBT25004 rev. date 2010-12-24 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 250mhz saw filter 3mhz 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: LBT25004 typical performance frequency response passband response 235 240 245 250 255 260 265 -92.2013 -82.2013 -72.2013 -62.2013 -52.2013 -42.2013 -32.2013 -22.2013 -12.2013 -2.2013 7.7987 type performance frequency(mhz) magnitude(db) 246 247 248 249 250 251 252 253 254 -4.7013 -4.2013 -3.7013 -3.2013 -2.7013 -2.2013 -1.7013 -1.2013 -0.7013 type performance frequency(mhz) amplitude ripple(db) horizontal: 5mhz/div vertical: 10db/div horizontal: 1mhz/div vertical: 0.5db/div group delay variation(f01.5mhz) phase linearity(f01.5mhz) 247 248 249 250 251 252 253 -600 -400 -200 0 200 400 600 800 1000 1200 1400 x: 250 y: 317.5 type performance frequency(mhz) group delay time(ns) x: 251.5 y: 424.1 x: 248.5 y: 410.8 247 248 249 250 251 252 253 -40 -30 -20 -10 0 10 20 30 40 x: 248.5 y: 2.352 type performance frequency(mhz) degree(deg) x: 251.5 y: -4.834 x: 250 y: 0.451 horizontal: 1mhz/div vertical: 200ns/div horizontal: 1mhz/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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