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| RF MOSFET Power Transistor, 8OW, 28V 2 - 175 MHz Features N-Channel Enhancement Mode Device DMOS Structure Lower Capacitances for Broadband Operation High Saturated Output Power Lower Noise Figure Than Competitive Devices DU2880U Absolute Maximum Ratings at 25C 1U Speciftcations Subject to Change Without Notice. M/A-COM, Inc. North America: Tel. (800) 366-2266 Fax (800) 618-8883 n Asia/Pacific: Tel. +81 (03) 3226-1671 Fax +81 (03) 3226-1451 w Europe: Tel. +44 (1344) 869 595 Fax +44 (1344) 300 020 RF MOSFET Power Transistor, 8OW, 28V DU2880U v2.00 Typical Broadband Performance Curves EFFICIENCY I',,=28 vs FREQUENCY 25 GAIN vs FREQUENCY V I,,=400 mA P,,,=80 W ." 25 50 100 150 175 25 50 100 150 175 FREQUENCY (MHz) FREQUENCY (MHz) POWER OUTPUT vs POWER INPUT V,,=28 V lDQ=400 mA 120 ) 30 I POWER OUTPUT vs SUPPLY I,,=400 VOLTAGE mA F-175 MHz P,,=3.0 W MHz loo 5 2 k z 80 80 40 20 5 0: 0.1 F 0.2 0.3 120 . loo 175 - MHz 100 MHz f 80. 01 1 2 3 4 5 13 75 20 25 30 33 POWER INPUT(W) SUPPLY VOLTAGE(V) Typical Device Impedance Frequency (MHz) z,, (OHMS) 2 LOAD (OHMS) 30 5.4 - i 4.4 1 2.5 - j 4.4 5.7 + j 4.7 1 3.4 + j 3.5 1 2.4 + j 2.4 1.7+jO.8 I I 1 50 I 100 175 ~~ 1 1.6-j3.4 0.7 - j 1.2 V,,=28 V, I,,=400 mA, P,,,=80 Watts Z,, is the series equivalent input impedance of the device from gate to source. ZLOAD the optimum series equivalent load impedance as measured from drain to ground. is Specifications Subject to Change Without Notice. MIA-COM, North America: Tel. (800) 366-2266 Fax (800) 618-8883 s Asia/Pacific: Tel. +81 (03) 3226-1671 Fax +81 (03) 3226-1451 = Europe: Inc. Tel. +44 (1344) 869 595 Fax +44 (1344) 300 020 RF MOSFET Power Transistor, 8OW, 28V DU2880U v2.00 RF Test Fixture VGS J3 VDS J4 VDS = 28 VOLTS IDQ = 400mA L3 RF IN Jl Cl Ql I c9 c7 -/-J I2 .. C8 I A RF OUT J2 -l--L - - PARTS LIST Cl $3 C2,C9,ClO C4,Cll CS C6,CB c7 Cl2 Ll L2 L3,L4 TRIMMER CAPACITOR 5OpF 1 OOOpF CIRCUIT CAPACITOR 9-18OpF O.OluF 4-4OpF CAPACITOR CAPACITOR MONOLITHIC TRIMMER CAPACITOR 15pF CAPACITOR ELECTROLYTIC CAPACITOR 5OuF 50 VOLT NO. 12 AWG COPPER WIRE X 1 .18" (LOOP 0.5") NO. 12 AWG COPPER WIRE X 1" (LOOP 0.4") 8 TURNS OF NO. 18 AWG ENAMEL `0.25", CLOSE WOUND WIRE ON Rl Fl2 01 BOARD RESISTOR 300 OHMS 0.5 WAlT RESISTOR 2.7K OHMS 0.25 WA-IT DU2880U FR4 0.062 Specifications Subject to Change Without Notice. M/A-COM, Inc. Tel. (800) 366-2266 Fax (800) 618-8883 n North America: Asia/Pacific: Tel. +81 (03) 3226-1671 Fax +8l (03) 3226-1451 n Europe: Tel. +44 (1344) 869 595 Fax +44 (1344) 300 020 |
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