triquint semiconductor texas : (972)994 8465 fax (972)994 8504 web: www.triquint.com advance product information november 16, 2005 1 catv ultra-linear power amp TGA2801B-SG key features and performance ? flat gain ? ultra-low distortion (47dbm ip3 typ.) ? wide bandwidth (40mhz-1ghz) ? low dc power consumption ? single supply bias (+12v) ? surface mount package ? high power compression (p1db 28.5 dbm typ.) ? unconditionally stable ? proven gaas technology description the triquint tga2801b is an ultra-linear, packaged power amplifier which operates from 40mhz to 1000mhz. the amplifier is packaged in a standard 16 lead soic package. the amplifier provides a flat gain along with ultra-low distortion. it also provides a high output power with a low dc power consumption. this amplifier is ideally suited for use in catv distribution systems or other applications requiring high output powers and extremely low distortion. bottom view top view primary applications ?hfc nodes ? catv line amplifiers ? head end equipment tga2801b gain w/external balun effects removed 9 10 11 12 13 14 0 200 400 600 800 1000 frequency (mhz) s21 (db) tga2801b distortion 114ch 44dbmv flat vd=12v, id=425ma -80 -75 -70 -65 -60 -55 -50 0 100 200 300 400 500 600 700 800 frequency (mhz) distortion (dbc) ctb xmod tga2801b noise figure 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 0 100 200 300 400 500 600 700 800 900 100 0 frequency (mhz) nf (db) evaluation boards are available upon request. lead-free and rohs compliant note: this device is early in the characterization process prior to finalizing all electrical specifications. specifications ar e subject to change without notice.
triquint semiconductor texas : (972)994 8465 fax (972)994 8504 web: www.triquint.com advance product information november 16, 2005 2 maximum ratings 1/ symbol parameter min max units notes v dd bias supply voltage 0 15 v i dd bias supply current 615 ma 2/ p in rf input power 70 dbmv t assy assembly temperature (30 seconds max) 260 c t stg storage temperature -65 150 c t case package operating temperature (heat slug) -40 100 c 1/ these values reflect maximum operable values for this device. operating above the recommended values may directly affect mttf. 2/ total current dc specifications symbol parameter typ unit v dd bias supply voltage 12 v i dd bias supply current 425 ma v g1 gate 1 voltage (pin 7) 0.33 v v g2 gate 2 voltage (pin 2) 4.15 v v out1 rf output 1 voltage (pin 14) v dd v v out2 rf output 2 voltage (pin 11) v dd v TGA2801B-SG
triquint semiconductor texas : (972)994 8465 fax (972)994 8504 web: www.triquint.com advance product information november 16, 2005 3 TGA2801B-SG rf specifications t a =25 c, v dd =12v symbol parameter min typ max units bw bandwidth 40 870 mhz s 21 gain 1/ 12.0 db gf gain flatness 1/ 0.3 db nf noise figure 2.6 db p 1db 1db gain compression @ 1ghz 28.5 dbm ip 3 two-tone, third-order intercept (625 & 700mhz) 47 dbm ctb composite triple beat distortion 2/ -71 dbc cso composite second order distortion 2/ -71 dbc xmod cross modulation 2/ -60 dbc irl input return loss 1/ 3 / 22 db orl output return loss 1/ 3 / 22 db i dd drain current 4/ 425 450 ma 1/ measured performance of chip alone. balun effects have been removed. 2/ 112-channel flat, +44dbmv/channel output 3/ using application circuit on last page 4/ increasing drain current will improve linearity of device
triquint semiconductor texas : (972)994 8465 fax (972)994 8504 web: www.triquint.com advance product information november 16, 2005 4 typical measured s-parameters using application circuit (includes effects of external baluns) 9 10 11 12 13 14 0 200 400 600 800 1000 frequency (mhz) s21 (db) -25 -20 -15 -10 -5 0 0 200 400 600 800 1000 frequency (mhz) s12 (db) TGA2801B-SG
triquint semiconductor texas : (972)994 8465 fax (972)994 8504 web: www.triquint.com advance product information november 16, 2005 5 typical measured s-parameters using application circuit (includes effects of external baluns) -50 -40 -30 -20 -10 0 0 200 400 600 800 1000 frequency (mhz) s11 (db) -50 -40 -30 -20 -10 0 0 200 400 600 800 1000 frequency (mhz) s22 (db) TGA2801B-SG
triquint semiconductor texas : (972)994 8465 fax (972)994 8504 web: www.triquint.com advance product information november 16, 2005 6 0.050 0.016 0.407 0.002 0.094 tga2801b lci pa - 2001 116 15 14 13 11 10 9 8 7 6 5 4 3 2 12 0.296 0.406 tga2801b mechanical specifications heat slug 0.234 0.184 0.087 0.056 TGA2801B-SG
triquint semiconductor texas : (972)994 8465 fax (972)994 8504 web: www.triquint.com advance product information november 16, 2005 7 lci pa - 2001 116 15 14 13 11 10 9 8 7 6 5 4 3 2 12 0.296 0.406 tga2801b pinout pin description pin description 1gnd 2 gate 2: open circuit on pc board 3 rf input 1 4gnd 5gnd 6 rf input 2 7 gate 1: current adjust r 1 = 274 w to gnd 8gnd 9gnd 10 v dd 11 rf output 2 12 gnd 13 gnd 14 rf output 1 15 v dd 16 gnd TGA2801B-SG
triquint semiconductor texas : (972)994 8465 fax (972)994 8504 web: www.triquint.com advance product information november 16, 2005 8 component description ref description c1 0.01 m f capacitor c2 0.01 m f capacitor c3 300pf capacitor c4 300pf capacitor c5 - c8 1.0pf - 2.0pf capacitor 3 / l1 390nh inductor l2 390nh inductor r1 current adjust 2 / r 1 = open circuit t1 balun 1 / t2 balun 1 / 1 / balun performance impacts amplifier return losses and gain. best performance can be achieved by winding 34 or 36 gauge bifilar wire around a small binocular core made from low-loss magnetic material. suitable wire may be obtained from mws wire industries. core vendors include ferronics, fairrite, tdk, and micrometals. alternatively, off-the-shelf baluns can be purchased from a number of vendors including mini-circuits ( adtl1-10-75-1 (used for this data) , adtl1-18-75), m/a-com (etc1-1- 13), and pulse engineering (cx2071). 2 / current can be adjusted by either changing the resistor value or forcing a voltage on pin 7. 3 / tunes out balun inductance. selected for best return loss. recommended assembly TGA2801B-SG
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