tel: +86-23-62808818 fax: +86-23-62808382 www.sipatsaw.com / sales@sipat.com part number LBT70A70 rev. date 2010-09-29 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 70mhz saw filter 7mhz 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: LBT70A70 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 - 27.2 30 1 db bandwidth mhz - 7.24 - 3 db bandwidth mhz 7.4 7.45 - 40 db bandwidth mhz - 8.17 - passband variation db - 0.8 1 absolute delay usec - 4.4 - f04.1mhz db 35 40 - f04.3mhz db 45 57 - f04.7mhz db 50 59 - ultimate rejection f08.7mhz db 55 61 - material temperature coefficient khz/c -1.3 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 LBT70A70 rev. date 2010-09-29 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 70mhz saw filter 7mhz 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: LBT70A70 matching configuration l1=82nh l2=33nh l3=120nh l4=68nh 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 all others marking configuration: 1) sipat: manufacturer name 2) LBT70A70: part number 3) xxyy: date(year/month) 4) zz: identified code input output 50 50 l2 l1 l3 l4 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 LBT70A70 xxyyzz
tel: +86-23-62808818 fax: +86-23-62808382 www.sipatsaw.com / sales@sipat.com part number LBT70A70 rev. date 2010-09-29 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 70mhz saw filter 7mhz 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: LBT70A70 typical performance frequency response passband response 55 60 65 70 75 80 85 -117.245 -107.245 -97.245 -87.245 -77.245 -67.245 -57.245 -47.245 -37.245 -27.245 -17.245 type performance frequency(mhz) magnitude(db) 60 62 64 66 68 70 72 74 76 78 80 -29.745 -29.245 -28.745 -28.245 -27.745 -27.245 -26.745 -26.245 -25.745 type performance frequency(mhz) amplitude ripple(db) horizontal: 5mhz/div vertical: 10db/div horizontal: 2mhz/div vertical: 0.5db/div group delay variation(f03.5mhz) phase linearity(f03.5mhz) 65 66 67 68 69 70 71 72 73 74 75 4100 4150 4200 4250 4300 4350 4400 4450 4500 4550 4600 x: 70 y: 4393 type performance frequency(mhz) group delay time(ns) x: 73.53 y: 4384 x: 66.47 y: 4392 65 66 67 68 69 70 71 72 73 74 75 -15 -10 -5 0 5 10 15 x: 66.47 y: -1.542 type performance frequency(mhz) degree(deg) x: 73.53 y: 1.946 x: 70 y: -0.8375 horizontal: 1mhz/div vertical: 50ns/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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