TC3142 pre2_20050615 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 / 3 2.45 ghz 5v 32dbm single-bias mmic features photo enlargement p -1 db: 33 dbm small signal gain: 13.5 db power added efficiency: 45 % ip3: 43 dbm dc bias: 600 ma @ 5 v description the TC3142 is a one stage phemt mmic power amplifier. it is designed for use in low cost, high volume, 2.4-2.5 ghz ism band applications. the mmic provides a typical gain of 13.5 db and saturation power of more than 34 dbm. typical bias condition is 5v at 600 ma. the mmic is packaged in a standard so-8 power package. the copper based carrier of the package allows direct soldering of the device to the pcb for proper heat sinking. the input and output matching of the mmic require external components. electrical specifications (ta = 25 c) symbol description min typ max units freq frequency range 2.4 2.5 ghz ssg small signal gain 12 13.5 db p -1 db output power at 1 db gain compression 32 33 dbm p -3 db output power at 3 db gain compression 33 34 dbm ip3 third order intercept point 42 43 dbm vswr, in input vswr 2:1 - vdd supply voltage 5 volt idd current supply without rf 600 ma idp -1 current supply @ pout = p -1 db 900 ma a power added efficiency 45 % vc gnd rf in gnd gnd v dd rf out rf out preliminary
TC3142 pre2_20050615 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 / 2 TC3142 vc gnd rf in vdd rf out gnd gnd rf out evaluation board pcb material: fr4 er = 4.6 thickness = 31 mil unit: mil application notes: (1) the dc bias condition should be 5 v / 600 ma by setting the vc voltage which can be adjusted by the rc on the external evaluation board based on the following formula 1 5 rc vc rrc = + . (2) for better heat sinking and grounding, it's recommended to have the via holes beneath TC3142 filled with solder and have two screws besides TC3142 installed on the pcb area. evaluation board parts list part type reference designator description manufacturer part number capacitor c1 0.5 pf 0603 murata capacitor c2 0.75pf 0603 murata grm39c0gr75c50v capacitor c3 1.2 pf 0603 murata grm39c0g1r2c50v capacitor c4 1.5 pf 0603 murata grm39c0g1r5c50v capacitor c5, c8 12 pf 0603 murata capacitor c6 100 pf 0603 murata capacitor c7, c9 1000 pf 0603 murata grm39c0g102j50v capacitor c10 4.7uf 1206 tantalum cap resistance r1 220 ohm
TC3142 pre2_20050615 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 3 / 3 connection diagram and pin descriptions 8 7 6 3 2 1 5 4 rf out rf in match match gnd vc gnd vd gnd physical dimensions (unit: inch) pin # name description 2 rf in rf input 1, 3, 8 gnd ground 4 vc fet gate bias 6, 7 rf out rf output 5 v d fet drain bias
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