tel: +86-23-62808818 fax: +86-23-62808382 www.sipatsaw.com / sawmkt@sipat.com part number LB070DS25 rev. date 2008-11-25 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 70mhz saw filter 28mhz 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: LB070DS25 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 69.8 70 70.2 insertion loss db - 15.4 18.5 1.2 db bandwidth mhz 27.2 27.38 - 3 db bandwidth mhz 28 28.98 - 35db bandwidth mhz - 34.2 34.65 passband variation(f012.5mhz) db - 0.9 1 group delay variation(f012.5mhz) nsec - 100 120 absolute delay usec - 1.03 - ultimate rejection db 35 40 - material temperature coefficient khz/c -6.58 substrate material - yz ln 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 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 / sawmkt@sipat.com part number LB070DS25 rev. date 2008-11-25 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 70mhz saw filter 28mhz 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: LB070DS25 matching configuration l1=l2=180nh c1=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: 11 output: 5 ground: all others marking configuration: 1) ?: pad number 1 index 2) sipat: manufacturer name 3) LB070DS25: part number 4) xxyy: date(year/month) 5) zz: identified code 6 5 12 11 4 3 7 8 9 10 1 3 2 4 10 7 8 9 12 11 5 6 13.3 +0.2 -0.1 6.5 +0.2 -0.1 1.56 0.1 0.4 0.79 0.76 1.5 2.54 sipat LB070DS25 xxyyzz c1 input output 50 50 l1 l2
tel: +86-23-62808818 fax: +86-23-62808382 www.sipatsaw.com / sawmkt@sipat.com part number LB070DS25 rev. date 2008-11-25 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 70mhz saw filter 28mhz 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: LB070DS25 typical performance frequency respond passband respond 20 30 40 50 60 70 80 90 100 110 120 -105.4071 -95.4071 -85.4071 -75.4071 -65.4071 -55.4071 -45.4071 -35.4071 -25.4071 -15.4071 -5.4071 type performance frequency(mhz) magnitude(db) 30 40 50 60 70 80 90 100 110 -17.9071 -17.4071 -16.9071 -16.4071 -15.9071 -15.4071 -14.9071 -14.4071 -13.9071 type performance frequency(mhz) amplitude ripple(db) horizontal: 10mhz/div vertical: 10db/div horizontal: 10mhz/div vertical: 0.5db/div group delay variation(f012.5mhz) phase linearity(f012.5mhz) 45 50 55 60 65 70 75 80 85 90 95 400 600 800 1000 1200 1400 1600 x: 70 y: 1018 type performance frequency(mhz) group delay time(ns) x: 82.5 y: 988.5 x: 57.5 y: 1030 45 50 55 60 65 70 75 80 85 90 95 -25 -20 -15 -10 -5 0 5 10 15 20 x: 70 y: 1.544 type performance frequency(mhz) degree(deg) x: 82.5 y: 0.0117 x: 57.5 y: -1.556 horizontal: 5mhz/div vertical: 200ns/div horizontal: 5mhz/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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