tel: +86-23-62808818 fax: +86-23-62808382 www.sipatsaw.com / sales@sipat.com part number LBT70A73 rev. date 2011-03-23 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 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: LBT70A73 features ? for if saw filter ? high attenuation ? single-ended operation ? dual in-line package ? rohs compliant (2002/95/ec), pb-free specifications parameter unit minimum typical maximum center frequency mhz 69.85 70 70.15 insertion loss db - 27.6 28 1.2 db bandwidth mhz 9.2 9.31 - 3 db bandwidth mhz 9.4 9.49 - 40 db bandwidth mhz - 10.36 10.4 passband variation(f04.5mhz) db - 0.8 1.2 group delay variation(f04.5mhz) nsec - 60 200 absolute delay usec - 2.28 2.4 f05.2mhz db 30 41 - f06mhz db 40 45 - f010mhz db 40 46 - ultimate rejection f015mhz db 40 47 - material temperature coefficient khz/c -1.26 substrate material - 112lt ambient temperature c 25 dc voltage v 0 input power dbm - - 10 esd class - 1a package size dip3512 (35.0x12.8x4.7mm3) 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 LBT70A73 rev. date 2011-03-23 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 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: LBT70A73 matching configuration l1=220nh l2=150nh c1=36pf c2=27pf source/load impedance=50 ohm notes - component values may change depending on board layout. package dimension package: dip3512 unit: mm pad configuration: input 1 output 5 ground 2,3,4,6 marking configuration: 1) sipat: manufacturer name 2) LBT70A73: part number 3) xxyy: date(year/month) 4) zz: identified code 1 2 3 45 6 12.80 0.50 35.00 0.50 4.50 0.50 4.70 0.50 0.45 0.05 25.40 0.50 7.62 0.50 2.54 0.20 2.54 0.20 sipat LBT70A73 xxyyzz c1 input output 50 50 l1 l2 c2
tel: +86-23-62808818 fax: +86-23-62808382 www.sipatsaw.com / sales@sipat.com part number LBT70A73 rev. date 2011-03-23 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 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: LBT70A73 typical performance frequency response passband response 45 50 55 60 65 70 75 80 85 90 95 -117.6407 -107.6407 -97.6407 -87.6407 -77.6407 -67.6407 -57.6407 -47.6407 -37.6407 -27.6407 -17.6407 type performance frequency(mhz) magnitude(db) 60 62 64 66 68 70 72 74 76 78 80 -29.6407 -29.1407 -28.6407 -28.1407 -27.6407 -27.1407 -26.6407 -26.1407 type performance frequency(mhz) amplitude ripple(db) horizontal: 5mhz/div vertical: 10db/div horizontal: 2mhz/div vertical: 0.5db/div group delay variation(f04.5mhz) phase linearity(f04.5mhz) 62 64 66 68 70 72 74 76 78 2000 2050 2100 2150 2200 2250 2300 2350 2400 2450 2500 x: 70 y: 2280 type performance frequency(mhz) group delay time(ns) x: 74.5 y: 2262 x: 65.5 y: 2280 62 64 66 68 70 72 74 76 78 -20 -15 -10 -5 0 5 10 15 x: 74.5 y: -1.508 type performance frequency(mhz) degree(deg) x: 70 y: 0.04389 x: 65.5 y: 1.156 horizontal: 2mhz/div vertical: 50ns/div horizontal: 2mhz/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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