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tat8858a1h catv infrastructure push - pull amplifier data sheet: rev c 10 / 2 1 /13 - 1 of 2 5 - disclaimer: subject to change without notice ? 2013 triquint www.triquint.com applications ? catv line amplifiers ? catv system amplifiers ? distribution nodes ? green applications soic - 16 wide package functional block diagram backside paddle - rf / dc gnd pin 1 reference mark 16 15 14 13 1 2 3 4 bias 2 a in 2 a out 2 a gate a out 1 a lin adj a in 1 a bias 1 a 5 6 7 8 12 11 10 9 bias 1 b in 1 b lin adj b out 1 b gate b out 2 b in 2 b bias 2 b general description the tat8858 a1h is a cost effective 75 ? rfic amplifier designed for use in high gain 24 v or 12 v catv applications up to 1000 mhz. it works with readily available smt baluns and transformers to provide a highly flexible low cost replacement for traditional hybrids. gain of the tat8858 a1h may be easily adjusted by varying external components, allowing for a family of push - pull hybrid solutions to be developed from a single rfic. the tat8858 a1h provides integrated linearization to improve the 3rd order distortion performance. the tat8858 a1h may be protected against esd and transient surges with the tqp200002 and an output filter network. con sult triquint for discussion. the tat8858 a1h supports traditional 24 v and 12 v supply voltages. bias current may be adjuste d to suit particular requirements with standard or active biasing approaches. consult triquint for further discussion. product features ? 75 ?, 50 - 1000 mhz bandwidth ? gaas phemt & mesfet technology ? user configurable gain: 27 C 34 db ? integrated linear ization ? choice of output device to optimize cost/performance ? flexible bias voltage and current for optimum efficiency ? soic - 16 wide package pin configuration pin no. label pin no. label 1 out 1a 10 in 2b 2 lin adj a 11 out 2b 3 in 1a 12 gate b 4 bi as 1a 13 gate a 5 bias 1b 14 out 2a 6 in 1b 15 in 2a 7 lin adj b 16 bias 2a 8 out 1b backside paddle rf/dc gnd 9 bias 2b ordering information part no. description tat8858a1h rfic tat 8858a1h - pcb 24v 50- 1000 mhz eval board tat8858a1h - pcb 12v 5 0 - 1000 m hz eval board standard t/r size = 10 00 pieces on a 7 " reel
tat8858a1h catv infrastructure push - pull amplifier data sheet: rev c 10 / 2 1 /13 - 2 of 2 5 - disclaimer: subject to change without notice ? 2013 triquint www.triquint.com recommended operating conditions parameter min typ max units supply voltage (v cc ) 24 v i cc 270 ma t case ? 2 0 + 120 c t j (for >10 6 hours mttf) +150 c electrical performanc e is measured and guaranteed under conditions noted in the el ectrical specifications table. specifications are not guaranteed over all recommended operating conditions. absolute maximum ratings parameter rating storage temperature ? 6 5 to 150c op eration of this device outside the parameter ranges given above may cause permanent damage. electrical specifications test conditions unless otherwise noted: v cc =+24 v, temp= +25c, 75 system. parameter conditions min typ max units operational f requency range 50 1000 mhz gain 50- 1000 mhz 32 db input return loss 18 db output return loss 16 db gain 50- 1200 mhz 31 db input return loss 14 db output return loss 14 db output p1db f=500 mhz 28 dbm output ip3 f1=225 mhz, f2= 325 mhz, pout= +11 dbm/tone 44 dbm composite triple beat (1) - 69 dbc composite second order (1) - 68 dbc composite intermodulation noise (1) - 70 db xmod (1) - 61 dbc noise figure 50 - 1000 mhz 3.0 db v bias 24 v i dd (2) 270 ma ther mal resistance, jc module (junction to case) 4.0 c/w notes: 1. 79ch. ntsc + qam ( - 6db offset) to 1003.25 mhz flat input, 43dbmv/ch vout at ch annel 2. 2. active biasing in easily implemented with traditional dual - pnp approaches. biasing at 12 v is also po ssible.
tat8858a1h catv infrastructure push - pull amplifier data sheet: rev c 10 / 2 1 /13 - 3 of 2 5 - disclaimer: subject to change without notice ? 2013 triquint www.triquint.com tat8858a1h - pcb 24v evaluation board layout u1 t1 t2 l7 r7 c7 r1 r5 l9 c9 l5 r3 l8 c31 c3 c30 c4 r8 r2 c8 l10 c10 r4 l6 r6 r30 r31 c11 c12 r9 r10 l11 l12 c13 r20 c15 ra l13 l14 c16 r21 rb c14 r11 r12 l19 r13 r14 l17 l18 r19 r18 c25 c24 l20 c22 l30 c2 tat8858a1h - pcb 24v schematic r5 r1 c7 c3 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 l17 r9 l11 l13 r13 r7 l9 c13 c9 c31 l5 r3 c11 r20 vbias vgate c25 r18 r19 l20 c24 +24v gnd j1 c15 ra l7 r30 r31 c4 j1 rf input 1 3 2 4 r6 u1 tat8857f3 l19 vgate t2 1 3 2 4 c2 l30 c22 vbias rf output l8 c30 r11 r12 l18 l14 r14 r2 c8 r10 l12 r8 l10 c14 c10 l6 r4 c12 r21 cin c16 rb
tat8858a1h catv infrastructure push - pull amplifier data sheet: rev c 10 / 2 1 /13 - 4 of 2 5 - disclaimer: subject to change without notice ? 2013 triquint www.triquint.com bill of material C tat8858a1h - pcb 24v reference des. value description manuf. part number n/a n/a printed circuit board triquint u1 n/a soic16w ic triqu int tat8858 t1 n/a tx line transformer, 3rd winding, 1:1 macom maba -008483- ct1760 t2 n/a tx line transformer, special, 2:1 macom maba - 007681 - ct2010 mini - circuits trs2 -1t -1+ c30, c31 2.2 pf cap 0402, 0.1pf, 50v, npo/cog tdk c1005c0g1h2r2b c15, c16 4.7pf cap 0402, 0.1pf, 50v, npo/cog murata grm1555c1h4r7bz01d c3, c4, c7, c8, c11, c12, c22 0.01 uf cap 0402, 10%, 50v, x7r various c13, c14 330 pf cap 0402, 10%, 50v, x7r panasonic ecj - 0eb1h331k c9, c10, c2 470 pf cap 0402, 5%, 50v, npo/cog tdk cga 2b2c0g1h471j c24, c25 0.01 uf cap 0603, 10%, 50v, x7r avx 06035c103kat2a cin 0.2 pf cap 0402, 0.05pf, 25v avx 04023j0r2abwtr l11, l12 470 nh ind 0402, 5% coilcraft 0402af - 471xjlu l9, l10 12 nh ind 0402, 5% coilcraft 0402cs - 12nxjlw l5, l6 16 nh ind 0 402, 5% coilcraft 0402cs - 18nxjlw l30 1.0 nh ind 0402, 5% coilcraft 0402cs - 1n0xjlw l17, l18 2.2 nh ind 0402, 5% coilcraft 0402cs - 2n2xjlw l20 900 nh ind 1008, 10% coilcraft 1008af - 901xklc l13, l14 43 nh ind 0402, 5% coilcraft 0402cs - 43nxjlw l7, l8, l19 600 res 0402, 300ma bead murata blm15ag601sn1 r7, r8 36.0 res 0402, 1%, 50v, 1/10w various r1, r2 20.0 k res 0402, 1%, 50v, 1/10w various r3, r4 360 res 0402, 1%, 50v, 1/10w various r18 2.70 k res 0603, 1%, 75v, 1/10w various r19 2.00 k res 0603, 1%, 75v, 1/10w various r5 8.06 k res 0402, 1%, 50v, 1/10w various r6 18.2 k res 0402, 1%, 50v, 1/10w various r9, r10 200 res 0402, 1%, 50v, 1/16w various ra, rb 15.0 res 0402, 1%, 50v, 1/10w various r13, r14 2.40 k res 0402, 1%, 50v, 1/10w various r11, r12 33.0 res 0402, 1%, 50v, 1/16w various r20, r21 24.0 res 0402, 1%, 50v, 1/16w various r30, r31 12.0 res 1206, 1%, 200v, 1/4w various
tat8858a1h catv infrastructure push - pull amplifier data sheet: rev c 10 / 2 1 /13 - 5 of 2 5 - disclaimer: subject to change without notice ? 2013 triquint www.triquint.com performance plots C tat8858 a1h - pcb 24v test conditions unless otherwise note d: v cc =+24 v, i dd = 270 ma, t case = +25 c, 75 ? system 25 27 29 31 33 35 37 0 200 400 600 800 1000 1200 gain (db) frequency (mhz) gain vs. frequency +85 c +25 c ?20 c - 40 - 35 - 30 - 25 - 20 - 15 - 10 - 5 0 200 400 600 800 1000 1200 |s11| (db) frequency (mhz) input return loss vs. frequency +85 c +25 c ?20 c - 35 - 30 - 25 - 20 - 15 - 10 - 5 0 0 200 400 600 800 1000 1200 |s22| (db) frequency (mhz) output return loss vs. frequency +85 c +25 c ?20 c 20 22 24 26 28 30 32 0 200 400 600 800 1000 1200 p1db (dbm) frequency (mhz) p1db vs. frequency +85 c +25 c ?20 c 0 1 2 3 4 5 0 200 400 600 800 1000 1200 nf (db) frequency (mhz) noise figure vs. frequency +85 c +25 c ?20 c 55 60 65 70 75 80 85 0 100 200 300 400 500 600 cin (db) frequency (mhz) cin vs. frequency +85 c +25 c ?20 c - 90 - 85 - 80 - 75 - 70 - 65 - 60 0 100 200 300 400 500 600 ctb (dbc) frequency (mhz) ctb vs. frequency +85 c +25 c ?20 c - 90 - 85 - 80 - 75 - 70 - 65 - 60 0 100 200 300 400 500 600 cso (dbc) frequency (mhz) cso vs. frequency +85 c +25 c ?20 c - 85 - 80 - 75 - 70 - 65 - 60 - 55 - 50 0 100 200 300 400 500 600 xmod (dbc) frequency (mhz) xmod vs. frequency +85 c +25 c ?20 c
tat8858a1h catv infrastructure push - pull amplifier data sheet: rev c 10 / 2 1 /13 - 6 of 2 5 - disclaimer: subject to change without notice ? 2013 triquint www.triquint.com tat8858 a1h - pcb 12v evaluation board layout u1 t1 t2 l7 r7 c7 r1 r5 l9 c9 l5 r3 l8 c31 c3 c30 c4 r8 r2 c8 l10 c10 r4 l6 r6 r30 ra rb r9 r10 l11 l12 c13 r20 c15 rd l13 l14 c16 r21 re c14 r11 r12 l19 r13 r14 l17 l18 r19 r18 c25 c24 l20 c22 l30 c2 r31 r32 tat8858 a1h - pcb 12v schematic r5 r1 c7 r3 r31 c31 c3 rf input 1 3 2 4 1 2 3 4 5 6 7 8 u1 tat8857f3 16 15 14 13 12 11 10 9 r11 cgate vgate vbias vgate c25 r18 r19 l20 c24 +12v gnd l8 r30 l13 r13 c13 r20 l9 r7 c9 l5 r9 l41 t2 1 3 2 4 c2 l30 c22 vbias rf output l17 r15 l19 l11 c41 vbias ra c15 j1 r32 l10 c30 c4 c8 r4 r2 r6 r12 l14 r14 r8 c10 l6 r10 l42 c14 c42 vbias l12 rb l18 r16 r21 c16
tat8858a1h catv infrastructure push - pull amplifier data sheet: rev c 10 / 2 1 /13 - 7 of 2 5 - disclaimer: subject to change without notice ? 2013 triquint www.triquint.com bill of material C tat8858 a1h - pcb 12v reference des. value description manuf. pa rt number n/a n/a printed circuit board triquint u1 n/a soic16w ic triquint tat8858 t1 n/a tx line transformer, 3rd winding, 1:1 macom maba - 00 8483 - ct1760 t2 n/a tx line transformer, special, 2:1 macom maba - 007681 - ct2010 mini - circuits trs2 -1t -1+ c 30, c 31 2.2 pf cap 0402, 0.1pf, 50v, npo/cog tdk c1005c0g1h2r2 b c15, c16 4.7pf cap 0402, 0.1pf, 50v, npo/cog murata grm1555c1h4r7bz01d c3, c4, c7, c8, c22 , c41, c42 0.01 uf cap 0402, 10%, 50v, x7r various c13, c14 330 pf cap 0402, 10%, 50v, x7r pan asonic ecj - 0eb1h331k c9, c10, c2 470 pf cap 0402, 5%, 50v, npo/cog tdk cga2b2c0g1h471j c24, c25 0.01 uf cap 0603, 10%, 50v, x7r avx 06035c103kat2a cgate 100 pf cap 0402, 10%, 50v, x7r various l11, l12 880 nh ind 0 805, 5% gowanda cc0805 - 88 0 j - 2 l9, l1 0 12 nh ind 0402, 5% coilcraft 0402cs - 12nxjlw l5, l6 1 6 nh ind 0402, 5% coilcraft 0402cs - 16 nxjlw l30 1.0 nh ind 0402, 5% coilcraft 0402cs - 1n0xjlw l17, l18 2.2 nh ind 0402, 5% coilcraft 0402cs - 2n2xjlw l20 900 nh ind 1008, 10% coilcraft 1008af - 901xklc l 13, l14 43 nh ind 0402, 5% coilcraft 0402cs - 43nxjlw l8, l19 , l41, l42 600 res 0402, 300ma bead murata blm15ag601sn1 r7, r8 36.0 res 0402, 1%, 50v, 1/10w various r1, r2 3.00 k res 0402, 1%, 50v, 1/10w various r3, r4 360 res 0402, 1%, 50v, 1/10 w various r18 2.7 0 k res 0603, 1%, 75v, 1/10w various r19 845 res 0603, 1%, 75v, 1/10w various r5 5.10 k res 0402, 1%, 50v, 1/10w various r6 9.10 k res 0402, 1%, 50v, 1/10w various r9, r10 1 0 .0 res 0402, 1%, 50v, 1/16w various ra, rb 15. 0 res 0402, 1%, 50v, 1/10w various r15, r16 3.0 res 0402, 5%, 50v, 1/10w various r13, r14 2.4 0 k res 0402, 1%, 50v, 1/10w various r11, r12 33.0 res 0402, 1%, 50v, 1/16w various r20, r21 24.0 res 0402, 1%, 50v, 1/16w various r30, r31 , r3 2 91.0 ohm res 1206, 1%, 200v, 1/4w various
tat8858a1h catv infrastructure push - pull amplifier data sheet: rev c 10 / 2 1 /13 - 8 of 2 5 - disclaimer: subject to change without notice ? 2013 triquint www.triquint.com performance plots C tat8858 a1h - pcb 12v test conditions unless otherwise noted: v cc =+ 12 v, i dd = 460 ma, t case = +25 c, 75 ? system - 25 - 20 - 15 - 10 - 5 0 24 26 28 30 32 34 0 200 400 600 800 1000 1200 1400 return loss (db) gain (db) freq (mhz) s21 s11 s22 - 80 - 75 - 70 - 65 - 60 - 55 0 100 200 300 400 500 600 distortion (dbc) freq (mhz) tat8858 12v ctb 80 ch ntsc flat; 12v, 460ma 49 48 47 46 45 44 43 42 41 - 80 - 75 - 70 - 65 - 60 - 55 0 100 200 300 400 500 600 distortion (dbc) freq (mhz) tat8858 12v cso 80 ch ntsc flat; 12v, 460ma 49 48 47 46 45 44 43 42 41 vout/ch
tat8858a1h catv infrastructure push - pull amplifier data sheet: rev c 10 / 2 1 /13 - 9 of 2 5 - disclaimer: subject to change without notice ? 2013 triquint www.triquint.com tat8858a1h 28 db gain reference design c7 r7 l9 c13 c9 r20 vbias vgate c25 r18 r19 l20 c24 +24v gnd j1 r5 r1 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 l17 r9 l11 c31 r3 c11 l7 r31 r30 r6 u1 tat8857f3 l19 vgate t2 1 3 2 4 c2 l30 c22 vbias rf output l8 c30 l18 r2 c8 r10 l12 r8 l10 c14 c10 r4 c12 r21 c4 c3 c16 c38 c27 c28 r12 r11 c36 c15 c37 rf input l31 1 3 2 4 r15 r16 r5 r6 tat8858a1h 28 d b gain reference design layout u1 t1 t2 l7 r7 c7 r1 r5 l9 c9 r5 r3 l8 c31 c3 c30 c4 r8 r2 c8 l10 c10 r4 r6 r6 r30 r9 r10 c11 c12 l11 l12 c13 r20 c15 r15 l13 l14 c16 r21 r16 c14 r11 r12 l19 r13 r14 l17 l18 r19 r18 c25 c24 l20 c22 l30 c2 r31 c37 c38 c36 l31 c27 c28
tat8858a1h catv infrastructure push - pull amplifier data sheet: rev c 10 / 2 1 /13 - 10 of 2 5 - disclaimer: subject to change without notice ? 2013 triquint www.triquint.com bill of material C tat8858a1h 28 28 db gain reference design reference des. value description manuf. part number n/a n/a printed circuit board triquint u1 n/a soic16w ic triquint tat8858 t1 n/a tx line t ransformer, 1:1 ma - com maba -008483- ct1760 t2 n/a tx line transformer, special, 2:1 ma - com maba - 007681 - ct2010 mini - circuits trs2 -1t -1+ c2 470 pf cap 0402, 5%, 50v, npo/cog tdk cga2b2c0g1h471j c15, c16 5.6 pf cap 0402, 0.1pf, 50v, npo/cog murata grm1555c1h5r6bz01d c3, c4, c7, c8, c11, c12, c22 0.01 uf cap 0402, 10%, 50v, x7r various c13, c14 270 pf cap 0402, 10%, 50v, x7r panasonic ecj - 0eb1h271k c9, c10 560 pf cap 0402, 5%, 50v, npo/cog tdk cga2b2c0g1h561j c24, c25 0.01 uf cap 0603, 10%, 50v, x7r avx 06035c103kat2a c27, c28, c36, c37, c38 0.5 pf cap 0402, 0.1pf, 25v, npo/cog avx 04023j0r5bbstr c30, c31 1.5 pf cap 0402, 0.1pf, 50v, npo/cog tdk c1005c0g1h1r5b l11, l12 180 nh ind 0402, 5% coilcraft 0402af - 181xjlu l9, l10, l17, l18 3.9 nh ind 0402, 5% coilcraft 0402cs - 3n9xjlw r5, r6 270 res 0402, 1%, 1/16w various l30, l31 1.0 nh ind 0402, 5% coilcraft 0402cs - 1n0xjlw l20 900 nh ind 1008, 10% coilcraft 1008af - 901xklc r15, r16 51.0 res 0402, 1%, 1 /10w various l7, l8, l19 600 res 0402, 300ma ferrite bead murata blm15ag601sn10 r7, r8 18.0 res 0402, 1%, 1/10w various r1, r2 20.0 k res 0402, 1%, 1/10w various r3, r4 0.0 res 0402, 1/10w various r18 2.70 k res 0603, 1%, 1/10w various r19 2.00 k res 0603, 1%, 1/10w various r5 10.0 k res 0402, 1%, 1/10w various r6 18.2 k res 0402, 1%, 1/10w various r9, r10 200 res 0402, 1%, 1/16w various r11, r12 33.0 res 0402, 1%, 1/16w various r20, r21 51.0 res 0402, 1%, 1/16w various r30, r31 12.0 ohm res 1206, 1%, 1/4w various
tat8858a1h catv infrastructure push - pull amplifier data sheet: rev c 10 / 2 1 /13 - 11 of 2 5 - disclaimer: subject to change without notice ? 2013 triquint www.triquint.com performance plots C 28 db gain reference design test conditions unless otherwise noted: v cc =+24 v, i dd = 270 ma, t case = +25 c, 75 ? system 50 52 54 56 58 60 62 64 66 68 70 - 80 - 78 - 76 - 74 - 72 - 70 - 68 - 66 - 64 - 62 - 60 0 100 200 300 400 500 600 ccn (db) cso, ctb, xmod (dbc) freq 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 0 200 400 600 800 1000 1200 nf (db) freq (mhz) noise figure tat8858 28 db configuration 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 20 40 60 80 100 nf (db) freq (mhz) low end noise figure tat8858 28 db configuration
tat8858a1h catv infrastructure push - pull amplifier data sheet: rev c 10 / 2 1 /13 - 12 of 2 5 - disclaimer: subject to change without notice ? 2013 triquint www.triquint.com tat8 858a1h 1200 mhz reference design r5 r1 c7 c3 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 l17 r9 l11 l13 r13 r7 l9 c13 c9 c31 l5 r3 c11 r20 vbias vgate c25 r18 r19 l20 c24 +24v gnd j1 c15 ra l7 r30 r31 c4 j1 rf input 1 3 2 4 r6 u1 tat8857f3 l19 vgate t2 1 3 2 4 c2 l30 c22 vbias rf output l8 c30 r11 r12 l18 l14 r14 r2 c8 r10 l12 r8 l10 c14 c10 l6 r4 c12 r21 cin c16 rb cout r40 c40 tat8858a1h 1200 mhz reference design layout u1 t1 t2 l7 r7 c7 r1 r5 l9 c9 l5 r3 l8 c31 c3 c30 c4 r8 r2 c8 l10 c10 r4 l6 r6 r30 r31 c11 c12 r9 r10 l11 l12 c13 r20 c15 ra l13 l14 c16 r21 rb c14 r11 r12 l19 r13 r14 l17 l18 r19 r18 c25 c24 l20 c22 l30 c2 cin c40 c40 cout
tat8858a1h catv infrastructure push - pull amplifier data sheet: rev c 10 / 2 1 /13 - 13 of 2 5 - disclaimer: subject to change without notice ? 2013 triquint www.triquint.com bill of material C tat8858a1h 1200 mhz reference design reference des. value description manuf. part number n/a n/a printed circuit board triquint u1 n/a soi c16w ic triquint tat8858 t1 n/a tx line transformer, 3rd winding, 1:1 macom maba -008483- ct1760 t2 n/a tx line transformer, special, 2:1 macom maba - 007681 - ct2010 mini - circuits trs2 -1t -1+ c30, c31 2.2 pf cap 0402, 0.1pf, 50v, npo/cog tdk c1005c0g1h2 r2b c15, c16 4.7pf cap 0402, 0.1pf, 50v, npo/cog murata grm1555c1h4r7bz01d c3, c4, c7, c8, c11, c12, c22 0.01 uf cap 0402, 10%, 50v, x7r various c13, c14 330 pf cap 0402, 10%, 50v, x7r panasonic ecj - 0eb1h331k c9, c10, c2 470 pf cap 0402, 5%, 50v, np o/cog tdk cga2b2c0g1h471j c24, c25 0.01 uf cap 0603, 10%, 50v, x7r avx 06035c103kat2a c40 12 pf cap 0402, 5%, 50v, npo/cog murata grm1555c1h120ja01d cin 0.3 pf cap 0402, 0.05pf, 25v avx 04023j0r3abwtr cout 0.5 pf cap 0402, 0.1pf, 25v avx 04023j0r5b bstr l11, l12 470 nh ind 0402, 5% coilcraft 0402af - 471xjlu l9, l10 12 nh ind 0402, 5% coilcraft 0402cs - 12nxjlw l5, l6 16 nh ind 0402, 5% coilcraft 0402cs - 18nxjlw l30 4.7 nh ind 0402, 5% coilcraft 0402cs -4 n 7 xjlw l17, l18 2.2 nh ind 0402, 5% coilcraft 0 402cs - 2n2xjlw l20 900 nh ind 1008, 10% coilcraft 1008af - 901xklc l13, l14 43 nh ind 0402, 5% coilcraft 0402cs - 43nxjlw l7, l8, l19 600 res 0402, 300ma bead murata blm15ag601sn1 r7, r8 36.0 res 0402, 1%, 50v, 1/10w various r1, r2 20.0 k res 0402, 1%, 50v, 1/10w various r3, r4 360 res 0402, 1%, 50v, 1/10w various r18 2.70 k res 0603, 1%, 75v, 1/10w various r19 2.00 k res 0603, 1%, 75v, 1/10w various r5 8.06 k res 0402, 1%, 50v, 1/10w various r6 18.2 k res 0402, 1%, 50v, 1/10w various r9, r10 200 res 0402, 1%, 50v, 1/16w various ra, rb 15.0 res 0402, 1%, 50v, 1/10w various r13, r14 2.40 k res 0402, 1%, 50v, 1/10w various r11, r12 33.0 res 0402, 1%, 50v, 1/16w various r20, r21 24.0 res 0402, 1%, 50v, 1/16w various r30, r31 12.0 res 1206, 1%, 200v, 1/4w various r40 1.0 k res 0402, 1%, 50v, 1/10w various
tat8858a1h catv infrastructure push - pull amplifier data sheet: rev c 10 / 2 1 /13 - 14 of 2 5 - disclaimer: subject to change without notice ? 2013 triquint www.triquint.com performance plots C tat8858a1h 120 0 mhz reference design test conditions unless otherwise noted: v cc =+24 v, i dd = 270 ma, t case = +25 c, 75 ? system 26 28 30 32 34 36 38 0 200 400 600 800 1000 1200 gain (db) frequency (mhz) gain vs. frequency temp.=+25 c - 40 - 35 - 30 - 25 - 20 - 15 - 10 - 5 0 0 200 400 600 800 1000 1200 |s11| , |s22| (db) frequency (mhz) return loss vs frequency temp.=+25 |s22| |s11|
tat8858a1h catv infrastructure push - pull amplifier data sheet: rev c 10 / 2 1 /13 - 15 of 2 5 - disclaimer: subject to change without notice ? 2013 triquint www.triquint.com detailed device description the tat8858 a1h is a 2 - s tage balanced amplifier using phemt & mesfet technology. each sta ge utilizes cascode topology to provide wide bandwidth and efficient linear amplification. the tat8858 allows flexibility to set the gain and bias to meet the requirements of different applications without additional active devices. bias options allow the designer to select either 12v bias for lower power dissipation green designs , or 24v for existing power supply systems. the tat8858 a1h push - pull amplifier can be configured to split a 24 v supply (and share the same current) or both amplifiers can be biase d from a 12v supply and draw current independently. dc operation in 24v application output stage 2a is in series with input stage 1a , show n as in simplified dc diagram below . output stage 2 b is in series with input stage 1 b. the dc current i (a+b ) flows from 24 v to ground through stage a & b in the direction shown below. l17 2.2 nh l18 2.2 nh 470 pf c2 c22 .01uf t2 maba-007681 -ct2010 rf out 1.0nh l30 24 v vbias c13 330 pf l11 470 nh c14 330 pf l12 470 nh c3 0.01 uf c4 0.01 uf r30 12 r31 12 pin14 pin11 pin16 pin9 pin15 pin10 pin1 pin8 pin4 pin5 pin3 pin6 2a 2b 1a 1b 2 to 1 balun in gnd out1 out2 pri sec 1 2 3 4 i (a+b) i a i b i a i b
tat8858a1h catv infrastructure push - pull amplifier data sheet: rev c 10 / 2 1 /13 - 16 of 2 5 - disclaimer: subject to change without notice ? 2013 triquint www.triquint.com detailed device description bias current adjustment bias current is determined by 2 settings: 1. size of dc feedback resistors - decreasing r1 & r2 will incr ease the bias current idd. 2. tail resistors - decreasing r 30, r31 will increase idd , but lead to wider variations . active biasing schemes are possible but not necessary for most applications. best performance is with idd = 270ma biasing of outpu t fet: 1. voltage split ratio is left to the customer and is set by vgate. 2. in 24v application no cap should be put on vgate. this prevents a turn - on over - voltage condition from damaging the output fet. 3. voltage divider should be done with same or lower resi stor values to prevent gate leakage current in the output fet from affecting vgate. 1 2 1 2 1b 1a 8857d 2b 2a bias 1a bias 1b lin adj a lin adj b bias 2a bias 2b gate a gate b 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 l6 16nh 12 r31 u1 tat8858 l7 600 l8 600 r11 3 r12 3 r5 8.06k r6 18.2k l11 470 c13 3 r9 200 c11 0.01u r7 36 l9 12nh c9 470pf c7 .01uf c31 2.2pf r1 20k l12 470 c14 3 r10 200 c12 0.01u r8 36 l10 12nh c10 470pf c8 .01uf c30 2.2pf r2 20k 12 r30 r3 360 l5 16nh r4 360 no capacitanc e on vgate.
tat8858a1h catv infrastructure push - pull amplifier data sheet: rev c 10 / 2 1 /13 - 17 of 2 5 - disclaimer: subject to change without notice ? 2013 triquint www.triquint.com detailed device description rf operation gain setting there are two primary ways to adjust the low frequency gain. 1. adjust shunt feedback resistors around in put and output stages. 2. adjust resistors in inter C stage equalizer. tilt adjustment 1. adding inductors in series with the shunt feedback resistors will peak the gain. 1 2 1 2 1 2 1a 8857d 2a bias 1a bias 1b lin adj a bias 2a gate a gate b 1 2 3 4 5 12 13 14 15 16 2 15 ra u1 tat8858 l7 600 l8 600 r11 33 r12 33 l19 600 r5 8.06k l11 470nh c13 330pf r20 24 c15 4.7 l13 43nh r13 2.4k l1 2. r9 200 c11 0.01u r7 36 l9 12nh c9 470pf c7 .01uf 1 pf r1 20k l1 .01u vgate r3 360 l5 16nh
tat8858a1h catv infrastructure push - pull amplifier data sheet: rev c 10 / 2 1 /13 - 18 of 2 5 - disclaimer: subject to change without notice ? 2013 triquint www.triquint.com detailed device description inter C stage equa lizer use inter C stage network for gain and tilt adjustment. two inter C stage rlc networks shape the gain and return loss without affecting the noise figure and output performance. 1. increasing inductor l9 will provide up - tilt. c9 affects very low freque ncy response. 2. ra and c15 will affect up - tilt shape . stage 1a stage 2a inter C stage equalizer r7 36 l9 12 nh c9 470 pf c13 330 pf ra 15 c15 4.7 pf r20 24 1 pin1 pin15
tat8858a1h catv infrastructure push - pull amplifier data sheet: rev c 10 / 2 1 /13 - 19 of 2 5 - disclaimer: subject to change without notice ? 2013 triquint www.triquint.com detailed device description return loss adjustment 1. low frequency return loss should be considered at the same time with gain using the feedback and equaliz er resistor values. 2. high frequency return loss can be adjusted with changes to the capacitor and inductor values near the input balun and output transformer. 1 2 1 2 1b 1a 8857d bias 1a bias 1b lin adj a lin adj b 1 2 3 4 5 6 7 8 2 3 12 r31 u1 tat885 l7 600 l8 600 r5 8.06k r6 18.2k r9 200 c31 2.2pf c3 1uf r1 20k r10 200 c30 2.2pf c4 1uf r2 20k 12 r30 r3 360 r4 360 ctb linearization 1. r5, r6 determines linearizer bias current. increasing r5, r6 decreases linearizer bias current. decreasing r5, r6 increases linearizer bias current. 2. r5, r6 value in the reference design has been empirically optimized for the best ctb. r5, r6 settings have some impact on cso.
tat8858a1h catv infrastructure push - pull amplifier data sheet: rev c 10 / 2 1 /13 - 20 of 2 5 - disclaimer: subject to change without notice ? 2013 triquint www.triquint.com detailed device description cso optimization cso is strongly dependent on circuit balance. requires attention to: 1. good input balun balance. 2. good output transformer balance. 3. maintaining symmetrical gain and phase response between circuit halves. c3 2.2 c3 .01uf c3 2.2 c4 .01uf 1 2 3 1 2 3 4 t1 maba-08483-ct1760 12 r30 rf in 1 cin 0.2pf r31 input balun m a , o a mb, ob c22 .01uf 2 to 1 balun in gnd out1 out2 pri sec 1 2 3 4 t2 maba-007681 -ct2010 1.0nh l30 output transformer ma, oa mb, ob circuit balance 1. pre - amp stage (stage 1a & stage 1b) is done with a d ifferential pair topology. 2. a high impedance from pin 4 & 5 to ground helps the pre - amp keep balance when the input balun is not perfect. 3. ferrite beads can achieve high impedance at low cost. two beads can be used to increase the current handling capability.
tat8858a1h catv infrastructure push - pull amplifier data sheet: rev c 10 / 2 1 /13 - 21 of 2 5 - disclaimer: subject to change without notice ? 2013 triquint www.triquint.com detailed device descr iption stability 1. significant stabilization circuits have been placed on the rfics. however, external circuitry can affect stability. 2. these components are helpful to reduce out of band gain and improve stability.
tat8858a1h catv infrastructure push - pull amplifier data sheet: rev c 10 / 2 1 /13 - 22 of 2 5 - disclaimer: subject to change without notice ? 2013 triquint www.triquint.com detailed device description dc operation - 12v supply application dc wise in 12 v application output stage 2a is in parallel with input stage 1a, shown as in simplified dc diagram below. similarly stage 2b is in parallel w ith input stage 1b. the dc current i (2a + 2 b) , i 1a , i 1b flow from 12 v to ground through stage a & b in the direction shown below . l17 3.3 nh l18 3.3 nh 470 pf c2 c22 .01uf t2 maba-007681 -ct2010 rf out 1.0nh l30 12 v vbias c13 330 pf l11 880 nh c14 330 pf l12 880 nh c3 0.01 uf c4 0.01 uf r30//r31//r32 pin14 pin11 pin16 pin9 pin15 pin10 pin1 pin8 pin4 pin5 pin3 pin6 2a 2b 1a 1b 12 v vbias 12 v vbias r9 10 r10 10 r30//r31//r32 2 to 1 balun in gnd out1 out2 pri sec 1 2 3 4 rf operation rf analysis for 12v supply application circuit is very similar to 24v. please refer to the earlier part of detailed device description for details . evaluation board pcb information triquint pcb 50 - 0177 - 04 material and stack - up 1 oz. cu bottom layer fr402 r =4.3 typ. 1 oz. cu top layer 0.031 0.005 finished board thickness 3.000" 2.000" i i 1a i 1b
tat8858a1h catv infrastructure push - pull amplifier data sheet: rev c 10 / 2 1 /13 - 23 of 2 5 - disclaimer: subject to change without notice ? 2013 triquint www.triquint.com pin configuration and description backside paddle - rf/ dc gnd pin 1 reference mark 16 15 14 13 1 2 3 4 bias 2a in 2a out 2a gate a out 1a lin adj a in 1a bias 1a 5 6 7 8 12 11 10 9 bias 1b in 1b lin adj b out 1b gate b out 2b in 2b bias 2b pin no. symbol description 1 out 1a stage 1a cascode amplifier drain output. connect to stage 2 a cascode amplifier input pin 16 using dc blocking cap c1 3 , buffer and gain equalizer network (r2 0 , r a , c1 5 ), as shown in schematic page 3 . 2 lin adj a linea rization adjustment a. connect to ground using r5 to set lineariz er bias. 3 in 1a stage 1a cascode amplifier g ate input . connect to a balun output using blocking cap c3. connect to stage 1a output pin 1 using feedback network (r3, l5, r1, c7) to set gain and dc bias current. connect to r30, r31 virtual ground using c5 to improve s11. 4 bias 1a stage 1a cascode amplifier s ource. connect to ground using l7, r30. pin 4 and pin 5 are connected on chip. 5 bias 1b stage 1b cascode amplifier source . connect to ground using l8, r31. pin 4 and pin 5 are connected on chip . 6 in 1b stage 1 b cascode amplifier gate input. connect to a balun output using blocking cap c 4 . connect to stage 1 b output pin 8 using feedback network (r 4 , l 6 , r 2 , c 8 ) to set gain and dc bias current. connect to r30, r31 virtual ground using c 6 to improve s 11. 7 lin adj b linearization adjust ment b . c onnect to ground using r6 to set linearizer bias. 8 out 1b stage 1b cascode amplifier drain output. connect to stage 2b cascode amplifier input pin 10 using dc blocking cap c1 4 , buffer and gain equalizer netwo rk (r2 1 , r b , c1 6 ) . 9 bias 2b stage 2b cascode amplifier source . connect to ground using serial rc network in 24v application. connect to ground using serial resistor - bead network in 12v application . see more in detailed device description. bias 2b and b ias 2a are connected on chip. 10 in 2b stage 2b cascode amplifier input . connect to stage 1 b cascode amplifier drain output as explained in pin 8 description. 11 out 2b stage 2b cascode amplifier drain output . requires dc b ias applied through the output b alun, rl feedback network and series matching inductor . 12 gate b stage 2b cascode amplifier output fet gate . connect to gate bias using a resistor and a bead. 13 gate a stage 2a cascode amplifier output fet gate . connect to gate bias using a resistor a nd a bead. 14 out 2a stage 2 a cascode amplifier drain output . requires dc b ias applied through the output b alun, rl feedback network and series matching inductor. 15 in 2a stage 2a cascode amplifier input . connect to stage 1a cascode amplifier drain output as explained in pin 1 description. 16 bias 2a stage 2 a cascode amplifier source. connect to ground using serial rc network in 24v application. connect to ground using serial resistor - bead network in 12 v application. see more in detailed device description . bias 2a and bias 2b are connected on chip. backside paddle rf/dc gnd rf/dc ground. use recommended via pattern to minimize inductance and thermal resistance; see pcb mounting pattern for suggested f ootprint.
tat8858a1h catv infrastructure push - pull amplifier data sheet: rev c 10 / 2 1 /13 - 24 of 2 5 - disclaimer: subject to change without notice ? 2013 triquint www.triquint.com mechanical information package marking and dimensions n otes : 1. all dimensions are in millimeters. angles are in degrees. 2. except where noted, this part outline conforms to jedec standard mo - 220, issue e (variation vggc) for thermally enha nced plastic very thin fine pitch quad flat no lead package (qfn). 3. dimension and tolerance formats conform to asme y14.4m - 1994. 4. the terminal #1 identifier and terminal numbering conform to jesd 95 - 1 spp- 012. pcb mounting pattern 4 n otes : 1. all dimensio ns are in millimeters. angles are in degrees. 2. use 1 oz. copper minimum for top and bottom layer metal. 3. a heatsink underneath the area of the pcb for the mounted device is strictly required for proper thermal operation. damage to the device can occur wi thout the use of one. 4. vias are required under the backside paddle of this device for proper rf/dc grounding and thermal dissipation. 5. do not remove or minimize via hole structure in the pcb . t hermal and rf grounding is critical. 6. we recommend a 0.35mm (# 80/.0135") diameter bit for drilling via holes and a final plated thru diameter of 0.25 mm (0.10). 7. ensure good package backside paddle solder attach for reliable operation a nd best electrical performance.
tat8858a1h catv infrastructure push - pull amplifier data sheet: rev c 10 / 2 1 /13 - 25 of 2 5 - disclaimer: subject to change without notice ? 2013 triquint www.triquint.com product compliance information esd sensiti vity ratings caution! esd - sensitive device esd rating: class iii value: passes 500 v test: human body model (hbm) standard: jedec standard jesd22 - a114 solderability compatible with both lead - free (260 c max. reflow temperature) and tin/lead (245 c max. reflow temperature) soldering processes. contact plating: matte tin rohs compliance this part is compliant with eu 2002/95/ec rohs directive (restrictions on the use of certain hazardous substances in electrical and electronic equipment). this product also has the following attributes: ? halogen free (chlorine, bromine) ? antimo ny free ? tbbp - a (c 15 h 12 br 4 0 2 ) free ? pfos free ? svhc free msl rating msl rating : level 3 test: 260c convection reflow standard: jedec standard ipc/jedec j - std - 020 contact information for the latest specifications, additional product information, worl dwide sales and distribution locations, and information about triquint: web: www.triquint.com tel: +1.503.615.9000 email: info - sales@triquint.com fax: +1.503.61 5.8902 for technical questions and application information: email: sjcapplications.engineering@triquint.com important notice the information contained herein is believed to be rel iable. triquint makes no warranties regarding the information contained herein. triquint assumes no responsibility or liability whatsoever for any of the information contained herein. triquint assumes no responsibility or liability whatsoever for the us e of the information contained herein. the information contained herein is provided "as is, where is" and with all faults, and the entire risk associated with such information is entirely with the user. all information contained herein is subject to chan ge without notice. customers should obtain and verify the latest relevant information before placing orders for triquint products. the information contained herein or any use of such information does not grant, explicitly or implicitly, to any party any patent rights, licenses, or any other intellectual property rights, whether with regard to such information itself or anything described by such information. triquint products are not warranted or authorized for use as critical components in medical, lif e - saving, or life - sustaining applications, or other applications where a failure would reasonably be expected to cause severe personal injury or death.

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