TC3918 rev1_20070503 transcom, inc., 90 dasoong 7 th road, tainan science-based industrial park, hsin-she shiang, tainan county, taiwan, r.o.c. web-site: www.transcominc.com.tw phone: 886-6-5050086 fax: 886-6-5051602 p 1 / 3 packaged single-bias low noise phemt gaas fets features 0.7 db typical noise figure at 12 ghz photo enlargement high associated gain: ga = 13 db typical at 12 ghz 18dbm typical power at 12 ghz 13 db typical linear power gain at 12 ghz lg = 0.25 m, wg = 160 m 100 % dc tested micro-x metal ceramic package description the TC3918 is a single-bias low noise ceramic micro-x packaged device with tc1101 phemt gaas fets, which is designed to provide the single power supply application. the device is suitable for oscillator, low noise amplifier in a wide range of commercial applications. all devices are 100% dc tested to assure consistent quality. electrical specifications (t a =25 c) symbol conditions min typ max unit nf noise figure at v ds = 2 v, f = 12ghz 0.7 1.2 db g a associated gain at v ds = 2 v, f = 12ghz 11 13 db p 1db output power at 1db gain compression point, f = 12ghz v ds = 4 v 16.5 g l linear power gain, f = 12ghz v ds = 4 v 11 13 db i ds drain-source current at v ds = 4 v 25 ma r th thermal resistance 230 c/w absolute maximum ratings (t a =25 c) typical noise parameters (t a =25 c) v ds = 4 v symbol parameter rating v ds drain-source voltage 7.0 v p in rf input power, cw 18 dbm p t continuous dissipation 150 mw t ch channel temperature 175 c t stg storage temperature -65 c to +175 c 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. opt frequency (ghz) nf opt (db) g a (db) mag ang rn/50 2 0.46 17.7 0.80 20 0.67 4 0.49 16.1 0.69 42 0.58 6 0.52 14.6 0.56 69 0.45 8 0.56 13.2 0.42 103 0.32 10 0.64 12.0 0.31 146 0.19 12 0.73 11.0 0.23 -161 0.14 14 0.85 10.6 0.21 -97 0.13 16 1.08 10.5 0.26 -19 0.18 18 1.33 10.2 0.41 72 0.38
TC3918 rev1_20070503 transcom, inc., 90 dasoong 7 th road, tainan science-based industrial park, hsin-she shiang, tainan county, taiwan, r.o.c. web-site: www.transcominc.com.tw phone: 886-6-5050086 fax: 886-6-5051602 p 2 / 3 typical scattering parameters (t a =25 c) v ds = 4 v frequency s 11 s2 1 s 1 2 s22 (ghz) mag ang mag ang mag ang mag ang 2 1.0037 -36.81 4.9472 151.92 0.0297 61.58 0.7379 -26.31 3 0.9618 -55.65 4.8706 131.81 0.0409 48.73 0.7117 -38.42 4 0.9101 -71.88 4.7020 114.73 0.0502 40.35 0.6877 -47.93 5 0.8490 -87.59 4.4937 98.67 0.0574 30.54 0.6615 -56.85 6 0.7843 -101.26 4.3157 84.48 0.0618 22.18 0.6355 -65.26 7 0.7184 -116.51 4.1587 69.36 0.0660 12.79 0.6046 -74.72 8 0.6503 -131.33 4.0117 55.37 0.0665 4.84 0.5806 -82.01 9 0.5768 -147.39 3.9100 41.80 0.0667 -3.78 0.5505 -89.25 10 0.5321 -164.51 3.8820 28.54 0.0669 -9.08 0.5182 -95.25 11 0.4670 174.87 3.8295 14.03 0.0690 -18.73 0.4748 -104.16 12 0.4302 154.30 3.8617 1.13 0.0647 -23.54 0.4659 -110.86 13 0.4003 128.28 3.9013 -15.12 0.0656 -32.69 0.4455 -123.28 14 0.4038 101.23 3.9206 -31.94 0.0631 -39.91 0.4519 -137.07 15 0.4313 73.02 3.8471 -50.20 0.0663 -53.76 0.4355 -154.84 16 0.4645 49.63 3.7261 -68.48 0.0663 -67.67 0.4571 -172.48 17 0.5138 30.09 3.4825 -85.38 0.0699 -82.26 0.4426 169.29 18 0.5504 15.19 3.2919 -100.35 0.0736 -100.33 0.4585 153.28 0 1.0 1.0 -1.0 10.0 10.0 -10.0 5.0 5.0 -5.0 2.0 2.0 -2.0 3.0 3.0 -3.0 4.0 4.0 -4.0 0.2 0.2 -0.2 0.4 0.4 -0.4 0.6 0.6 -0.6 0.8 0.8 -0.8 swp max 18ghz swp min 2ghz s11 0 15 30 45 60 75 90 105 120 135 150 165 -180 -165 -150 -135 -120 -105 -90 -75 -60 -45 -30 -15 swp max 18 ghz swp min 2 ghz mag max 0.1 0.025 per div s12 0 15 30 45 60 75 90 105 120 135 150 165 -180 -165 -150 -135 -120 -105 -90 -75 -60 -45 -30 -15 swp max 18 ghz swp min 2 ghz mag max 10 2 per div s21 0 1.0 1.0 -1.0 10.0 10.0 -10.0 5.0 5.0 -5.0 2.0 2.0 -2.0 3.0 3.0 -3.0 4.0 4.0 -4.0 0.2 0.2 -0.2 0.4 0.4 -0.4 0.6 0.6 -0.6 0.8 0.8 -0.8 swp max 18ghz swp min 2ghz s22
TC3918 rev1_20070503 transcom, inc., 90 dasoong 7 th road, tainan science-based industrial park, hsin-she shiang, tainan county, taiwan, r.o.c. web-site: www.transcominc.com.tw phone: 886-6-5050086 fax: 886-6-5051602 p 3 / 3 outline dimensions (in inch) tape & reel package orientation (in mm) 4.0 section a-a 12.0 +/- 0.3 5.5 +/- 0.05 a a ao = 7.0 mm a1 = 1.45 mm bo = 7.0 mm b1 = 0.9 mm ko = 2.0 mm 0.5 +0.1/-0.0 1.75 0.30 +/- 0.05 ko 2.0 +/- 0.05 ao bo 8.0 a1 0.5 min. standard reel size 7? standard reel quantity 1000
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