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1 tga2806-sm oct 2010 ? rev c triquint semiconductor: www. tri quint.com (972)994- 8465 fax (972)994-8504 info-mmw@tqs.com primary applications product description key features measured performance catv linear amplifier ? frequency range: 40mhz - 1ghz ? gain: 20 db ? 1.7 db 75 noise figure ? ultra-low distortion: -67dbc acpr typical ? low dc power consumption ? single supply bias:+8v, 380ma ? 28l package dimension: 5.0 x 5.0 x 0.85 mm ? cmts equipment ? catv line amplifiers the triquint tga2806-sm is an ultra-linear, packaged gain block which operates from 40mhz to 1000mhz. the tga2806-sm typically provides flat gain along with ultra-low distortion. it also provides high output power with low dc power consumption. this amplifier is ideally suited for use in catv distribution systems or other applications requiring extremely low noise and distortion. demonstration boards are available. lead-free and rohs compliant. small signal gain (75 ? ) includes balun losses output toi (75 ? )
2 tga2806-sm oct 2010 ? rev c triquint semiconductor: www. tri quint.com (972)994- 8465 fax (972)994-8504 info-mmw@tqs.com table ii recommended operating conditions table i absolute maximum ratings 1/ symbol parameter value notes vd-vg drain to gate voltage 11 v vd1, vd2 drain voltage 10 v 2/ vg1 gate voltage range -1 to 3 v vg2 gate voltage range 0 to 5 v id1 drain current 275 ma 2/ id2 drain current 275 ma 2/ pin input continuous wave po wer per rf input 25 dbm 2/ tchannel channel temperature 200 c 1/ 1/ these ratings represent the maximum operable values for this device. stresses beyond those listed under ?absolute maximum ratings? may cause permanent damage to the device and / or affect device lifetime. these are stress ratings only, and functional operation of the device at these conditions is not implied. 2/ combinations of supply voltage, supply curr ent, input power, and output power shall not exceed the maximum power dissipation listed in table iv. symbol parameter 1 / value value 2 / value 2 / vd1, vd2 bias supply voltage 8 v 8 v 9 v id1 + id2 bias supply current 380 ma 350 ma 380 ma vg1 gate 1 voltage (pin 26) 1.1 v 0.9 v 1.0 v vg2 gate 2 voltage (pin 10) 3.2 v 2.67 v 3.0 v r1 / r2 external bias resistors 6.8k / 10k open / open open / open 1 / the amplifier is self-biased. 2 / these gate voltages are developed internally using on-chip resistive divider networks.
3 tga2806-sm oct 2010 ? rev c triquint semiconductor: www. tri quint.com (972)994- 8465 fax (972)994-8504 info-mmw@tqs.com table iii rf characterization table 1/ t a =25 c, vd1, vd2=9v symbol paramete r min typ max units note bw bandwidth 40 1000 mhz s 21 power gain 17 20 24 db 2 / gf gain flatness 0.3 db acpr1 adjacent channel power ratio -63 -66 dbc 2 / nf noise figure 1.7 db tz transimpedance 800 i n equivalent input current noise 5 pa/rthz 3 / ip 3 two-tone, third-order intercept (450 mhz) 46 dbm 4 / ip 3 two-tone, third-order intercept (750 mhz) 42 dbm 4 / irl input return loss 16 db orl output return loss 20 db id1 + id2 drain current 250 380 500 ma 5 / p_sat saturated output power (320 mhz) 28 dbm 1 / using application circuit on pg. 7, resistors r1 and r2 are left open 2 / measured at 858mhz with a single 6mhz wide channel, 256qam signal at 62 dbmv average output power (into 75 ? ). acp is measured in the channel that is offset from the signal band edge by 750khz to 6mhz. gain is also measured at this frequency. 3 / measured with open-circuited input 4 / 16dbm output power per tone 5 / increasing drain current will improve linearity of device
4 tga2806-sm oct 2010 ? rev c triquint semiconductor: www. tri quint.com (972)994- 8465 fax (972)994-8504 info-mmw@tqs.com table iv power dissipation and thermal properties parameter test conditions value notes maximum power dissipation tbaseplate = 85 c pd = 5.5 w tchannel = 168 c tm = 2.4e+5 hrs 1/ 2/ thermal resistance, jc vd1, vd2 = 9 v id1+id2 = 380 ma pd = 3.42 w jc = 15.1 (c/w) tchannel = 137 c tm = 3.1e+6 hrs mounting temperature 30 seconds 260 c storage temperature -65 to 150 c 1/ for a median life of 1e+6 hours, power dissipation is limited to pd(max) = (150 c ? tbase c)/ jc. 2/ channel operating temperature will directly affect the device median time to failure (tm). for maximum life, it is recommended that channel temperatures be maintained at the lowest possible levels. median lifetime (tm) vs. channel temperature
5 tga2806-sm oct 2010 ? rev c triquint semiconductor: www. tri quint.com (972)994- 8465 fax (972)994-8504 info-mmw@tqs.com typical measured acpr and toi using application circuit vd1, vd2 = 9 v, id1+id2 = 380ma typ (includes effects of external baluns)
6 tga2806-sm oct 2010 ? rev c triquint semiconductor: www. tri quint.com (972)994- 8465 fax (972)994-8504 info-mmw@tqs.com typical measured s-parameters (75 ) using application circuit vd1, vd2 = 8 v, id1+id2 = 380ma typ (includes effects of external baluns)
7 tga2806-sm oct 2010 ? rev c triquint semiconductor: www. tri quint.com (972)994- 8465 fax (972)994-8504 info-mmw@tqs.com application circuit rf input 75 ? 1:1 balun 75 ? 1:1 balun 1 / balun performance impacts amplifier return losses, gain and acpr. best performance can be achieved by winding 34 or 36 gauge bifilar wire around a small bi nocular 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 incl uding mini-circuits (adtl1- 18-75), m/a-com (etc1-1-13), and pulse engineering (cx2071). 2 / optional external resistors r1 and r2 increase t he vg1 and vg2 voltages, respectively as described in table ii. the increased current improves the output toi by about 1db. ref des description c1, c2 0.01 f c3, c4 470pf c5, c6 270pf l1, l2 820nh t1, t2 balun 1 / r1 (optional) 6.8k 2 / r2 (optional) 10k 2 / 2, 3 5, 6 19, 20 16, 17 12 10 11 24 26 25 4 18 +9 v (vd2) +9 v (vd1) c1 c2 c3 c4 c5 c6 l1 l2 r1 r2 t1 t2 rf output tga2806-sm
8 tga2806-sm oct 2010 ? rev c triquint semiconductor: www. tri quint.com (972)994- 8465 fax (972)994-8504 info-mmw@tqs.com pin description pin description 2 rf input 1 16 rf output 2 3 rf input 1 17 rf output 2 4 gnd 18, 29 gnd 5 rf input 2 19 rf output 1 6 rf input 2 20 rf output 1 1, 7, 8,14 nc 15, 21, 22, 23 nc 9 gnd 24 vd1 (choked) 10 vg2 (optional) 25 vd1 11 vd2 26 vg1 (optional) 12 vd2 (choked) 27 gnd 13 isense 28 nc notes: pin 13 (isense) is used to monitor t he drain current across a 4 ohm resistor, if desired the voltage at pin 13 is vsense = (id1+id2) * 4 volts pins 9 and 27 are internally connected to gnd but may be left open pins 4 and 18 should be connected to large gnd pad (pin 29) nc pins (1,7,8,14,15,21,22,23,28) are not connected internally; they may be grounded externally, if desired 2806 0809 1459 29
9 tga2806-sm oct 2010 ? rev c triquint semiconductor: www. tri quint.com (972)994- 8465 fax (972)994-8504 info-mmw@tqs.com 29 dimensions are in mm
10 tga2806-sm oct 2010 ? rev c triquint semiconductor: www. tri quint.com (972)994- 8465 fax (972)994-8504 info-mmw@tqs.com recommended assembly diagram board material: 1.57mm thick fr4 thirty-six (36) open plated vias in center of land pattern vias are 12 mil diameter with 20 mil center-to-center spacing t1 c1 c2 c3 c4 r1 t2 c5 l1 l2 c6 r2 u1
11 tga2806-sm oct 2010 ? rev c triquint semiconductor: www. tri quint.com (972)994- 8465 fax (972)994-8504 info-mmw@tqs.com gaas mmic devices are susceptible to damage from electrostatic discharge . proper precautions should be observed during handling, assembly and test. assembly notes ordering information recommended surface mount package assembly ? proper esd precautions must be followed while handling packages. ? clean the board with acetone. rinse with alc ohol. allow the circuit to fully dry. ? triquint recommends using a conductive solder pas te for attachment. follow solder paste and reflow oven vendors? recommendations when dev eloping a solder reflow profile. typical solder reflow profiles are listed in the table below. ? hand soldering is not recommended. solder paste can be applied using a stencil printer or dot placement. the volume of solder paste depends on pcb and component layout and should be well controlled to ensure consistent me chanical and electrical performance. ? clean the assembly with alcohol. reflow profile snpb pb free ramp-up rate 3 c/sec 3 c/sec activation time and temperature 60 ? 120 sec @ 140 ? 160 c 60 ? 180 sec @ 150 ? 200 c time above melting point 60 ? 150 sec 60 ? 150 sec max peak temperature 240 c 260 c time within 5 c of peak temperature 10 ? 20 sec 10 ? 20 sec ramp-down rate 4 ? 6 c/sec 4 ? 6 c/sec part package style tga2806-sm, tape and reel 5mm x 5 mm qfn surface mount, tape and reel

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