tel: +86-23-62808818 fax: +86-23-62808382 www.sipatsaw.com / sales@sipat.com part number LBT37402 rev. date 2011-04-27 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 374mhz saw filter 4mhz 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: LBT37402 features ? for if saw filter ? single-ended operation ? ceramic surface mount package ? small size ? rohs compliant (2002/95/ec), pb-free specifications parameter unit minimum typical maximum center frequency mhz - 374 - insertion loss db - 15 18 1 db bandwidth mhz 4.45 4.51 - 3 db bandwidth mhz - 5.49 - 20 db bandwidth mhz - 7.05 7.5 40 db bandwidth mhz - 8.35 9 passband variation db - 0.6 1 absolute delay usec - 1.6 - ultimate rejection db - 43 - material temperature coefficient khz/c -6.7 substrate material - 112lt ambient temperature c 25 dc voltage v 0 input power dbm - - 10 esd class - 1a package size smd13.3*6.5 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 LBT37402 rev. date 2011-04-27 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 374mhz saw filter 4mhz 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: LBT37402 matching configuration l1=l3=15nh l2=27nh c1=8.2pf c2=22pf source/load impedance=50 ohm notes - component values may change depending on board layout. package dimension package: smd13.3*6.5 unit: mm pad configuration: input: 10 output: 5 ground: 1,2,3,4,6,7,8,9 marking configuration: 1) ?: pad number 1 index 2) sipat: manufacturer name 3) LBT37402: part number 4) xxyy: date(year/month) 5) zz: identified code 13.3 +0.2 -0.1 6.5 +0.2 -0.1 0.4 0.76 2.9 1.02 0.13 0.6 1.905 0.15 1.51 0.2 sipat LBT37402 xxyyzz 0.51 input output 50 50 l1 c1 l2 c2 l3 10 5
tel: +86-23-62808818 fax: +86-23-62808382 www.sipatsaw.com / sales@sipat.com part number LBT37402 rev. date 2011-04-27 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 374mhz saw filter 4mhz 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: LBT37402 typical performance frequency response passband response 350 355 360 365 370 375 380 385 390 395 -104.9242 -94.9242 -84.9242 -74.9242 -64.9242 -54.9242 -44.9242 -34.9242 -24.9242 -14.9242 -4.9242 type performance frequency(mhz) magnitude(db) 368 370 372 374 376 378 380 -17.4242 -16.9242 -16.4242 -15.9242 -15.4242 -14.9242 -14.4242 -13.9242 -13.4242 type performance frequency(mhz) amplitude ripple(db) horizontal: 5mhz/div vertical: 10db/div horizontal: 2mhz/div vertical: 0.5db/div group delay variation(f02mhz) phase linearity(f02mhz) 370 371 372 373 374 375 376 377 378 1000 1200 1400 1600 1800 2000 2200 x: 374 y: 1561 type performance frequency(mhz) group delay time(ns) x: 376 y: 1604 x: 372 y: 1559 370 371 372 373 374 375 376 377 378 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 x: 372 y: 1.924 type performance frequency(mhz) degree(deg) x: 374 y: -0.1711 x: 376 y: 2.597 horizontal: 1mhz/div vertical: 200ns/div horizontal: 1mhz/div vertical: 5deg/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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