TC2896 rev4_20070507 transcom, inc., 90 dasoong 7 th road, tainan science-based industrial park, hsin-she shiang, tainan county, taiwan, web-site: www.transcominc.com.tw phone: 886-6-5050086 fax: 886-6-5051602 p 1 / 4 5 w flange ceramic packaged gaas power fets features ? 5 w typical power at 6 ghz ? 8 db typical linear power gain at 6 ghz ? high linearity: ip3 = 47 dbm typical at 6 ghz ? high power added efficiency: nominal pae of 40 % at 6 ghz ? suitable for high reliability application ? lg = 0.6 m, wg = 12 mm ? tight vp ranges control ? high rf input power handling capability ? 100 % dc and rf tested ? flange ceramic package description the TC2896 is packaged with the tc1806 pseudomorphic high electron mobility transistor (phemt) chip. the flange ceramic package provides the best thermal conductivity for the gaas fet. all devices are 100% dc and rf tested to assure consistent quality. typical applications include high dynamic range power amplifiers for commercial and military high performance power applications. electrical specifications symbol conditions min typ max unit p 1db output power at 1db gain compression point, f = 6 ghz v ds = 8 v, i ds = 1200 ma 36 36.5 dbm g l linear power gain, f = 6 ghz v ds = 8 v, i ds = 1200 ma 8 db ip3 intercept point of the 3 rd -order intermodulation, f = 6 ghz v ds = 8 v, i ds = 1200 ma, *p scl = 23 dbm 47 dbm pae power added efficiency at 1db compression power, f = 6 ghz 40 % i dss saturated drain-source current at v ds = 2 v, v gs = 0 v 3 a g m transconductance at v ds = 2 v, v gs = 0 v 2000 ms v p pinch-off voltage at v ds = 2 v, i d = 24 ma -1.7** volts bv dgo drain-gate breakdown voltage at i dgo =6 ma 18 22 volts r th thermal resistance 2.7 c/w * p scl : output power of single carrier level. ** for the tight control of the pinch-off voltage range, we divide TC2896 into 3 model numbers to fit customer design requireme nt (1)TC2896p1519 : vp = -1.5v to -1.9v (2)TC2896p1620 : vp = -1.6v to -2.0v (3)TC2896p1721 : vp = -1.7v to -2.1v if required, customer can specify the requirement in purchasing document. for special vp requirement, please contact factory fo r details . photo enlargement
TC2896 rev4_20070507 transcom, inc., 90 dasoong 7 th road, tainan science-based industrial park, shanhua jen, tainan county, taiwan, r.o.c. web-site: www.transcominc.com.tw phone: 886-6-5050086 fax: 886-6-5051602 p 2 / 4 absolute maximum ratings at 25 c symbol parameter rating v ds drain-source voltage 12 v v gs gate-source voltage -5 v i ds drain current i dss p in rf input power, cw 33 dbm p t continuous dissipation 12 w t ch channel temperature 175 c t stg storage temperature - 65 c to +175 c recommanded operating condition symbol parameter rating v ds drain to source voltage 8 v i d drain current 1200 ma handling precautions: the user must operate in a clean, dry environment. electrostatic discharge (esd) precautions should be observed at all stages of storage, handling, assembly, and testing. the static discharge must be less than 300v. flange package outline (unit: mm) typical common source scattering parameters (v d = 8 v, i d = 1200 ma) frequency s11 s21 s12 s22 (ghz) mag ang mag ang mag ang mag ang 2 0.9650 171.78 0.9104 59.16 0.0139 -12.97 0.8234 170.89 3 0.9638 163.17 0.6050 42.70 0.0142 -21.11 0.8368 165.05 4 0.9619 154.95 0.4575 27.39 0.0149 -28.69 0.8493 158.49 5 0.9589 146.44 0.3761 12.78 0.0159 -36.22 0.8590 151.12 6 0.9546 137.21 0.3298 -1.60 0.0173 -44.15 0.8648 142.84 7 0.9486 126.89 0.3056 -16.23 0.0195 -52.92 0.8664 133.42 8 0.9404 114.98 0.2972 -31.69 0.0224 -63.02 0.8636 122.53 9 0.9295 100.88 0.3011 -48.62 0.0263 -75.03 0.8562 109.67 gate drain source source
TC2896 rev4_20070507 transcom, inc., 90 dasoong 7 th road, tainan science-based industrial park, hsin-she shiang, tainan county, taiwan, web-site: www.transcominc.com.tw phone: 886-6-5050086 fax: 886-6-5051602 p 3 / 4 test circuits 2.4 ghz 5 w amplifier evaluation board schematic (v d = 8 v, i d = 1200 ma) evaluation board pcb material: fr4 er = 4.6 thickness = 31 mil unit: mil * dxf file of the pcb can be downloaded from our web site at www.transcominc.com.tw evaluation board parts list part type reference designator description resistor r1 12 ohm 0603 capacitor c1, c2 0.75 pf 0603 capacitor c6 1.5 pf 0603 capacitor c7 0.5 pf 0603 capacitor c8, c10 50 pf 0603 capacitor c9 10 uf 1812 capacitor c4 100 pf 0603 capacitor c3 1000 pf 0603 capacitor c5 0.1 uf 0603
TC2896 rev4_20070507 transcom, inc., 90 dasoong 7 th road, tainan science-based industrial park, hsin-she shiang, tainan county, taiwan, web-site: www.transcominc.com.tw phone: 886-6-5050086 fax: 886-6-5051602 p 4 / 4 small signal model (v d = 8 v, i d = 1200 ma) fet cgd cgs cds crf cpkg1 cpkg2 cpkg1 cpkg2 ri rs rds rd rg ls lg lpkg2 lpkg4 ld lpkg1 lpkg3 lpkg1 lpkg2 lpkg3 g d s fet elements lg = 0.0034 nh rds = 6.49 ohm cgd = 0.763 pf rd = 0.193 ohm rg = 0.172 ohm ld = 0.0032 nh cgs = 28.656 pf lpkg1 = 0.1 725 nh ri = 0.336 ohm l pkg2 = 0.208 nh gm = 2000 ms lpkg3 = 0.079 nh t = 7.0 psec lpkg4 = 0.0 0062 nh rs = 0.265 ohm cpkg1 = 0.408 pf ls = 0.00048 nh cpkg2 = 0.263 pf cds = 5.01 pf
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