RF MOSFET Power Transistor, 8OW, 28V 2 - 175 MHz DU2880U Features N-Channel Enhancement Mode Device DMOS Structure Lower Capacitances for Broadband Operation High Saturated Output Power Lower Noise Figure Than Competitive Devices Absolute Maximum Ratings at 25°C 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, DU2880U 8OW, 28V v2.00 Typical Broadband Performance EFFICIENCY Curves GAIN vs FREQUENCY vs FREQUENCY V I,,=400 mA P,,,=80 W I’,,=28 25 .” 50 25 150 100 FREQUENCY 175 25 50 V,,=28 V lDQ=400mA ) 5 2 80 k z 80 40 5 20 VOLTAGE mA F-175 MHz P,,=3.0 W I 30 loo I,,=400 175 150 (MHz) POWER OUTPUT vs SUPPLY POWER OUTPUT vs POWER INPUT 120 100 FREQUENCY (MHz) 120 . MHz F loo 175 MHz f 100 MHz 0: 0.1 0.2 0.3 - 80. 01 1 2 4 3 5 13 75 20 25 30 33 SUPPLY VOLTAGE(V) POWER INPUT(W) Typical Device Impedance z,, (OHMS) 2 LOAD (OHMS) 30 5.4 - i 4.4 5.7 + j 4.7 1 50 1 2.5 - j 4.4 1 3.4 + j 3.5 I 1 1 2.4 + j 2.4 I Frequency I 100 (MHz) ~~ 1.6-j3.4 1.7+jO.8 0.7 - j 1.2 175 V,,=28 V, I,,=400 mA, P,,,=80 Watts Z,, is the series equivalent input impedance of the device from gate to source. ZLOAD is the optimum series equivalent load impedance as measured from drain to ground. 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, DU2880U 8OW, 28V v2.00 RF Test Fixture VGS VDS J3 J4 VDS = 28 VOLTS IDQ = 400mA L3 RF IN Jl RF OUT I2 Ql C8 I A .. Cl I J2 c9 c7 -l--L - -/- -J - PARTS LIST Cl $3 TRIMMER C2,C9,ClO CAPACITOR CAPACITOR 5OpF C4,Cll CAPACITOR 1 OOOpF CS MONOLITHIC C6,CB TRIMMER 4-4OpF CIRCUIT CAPACITOR CAPACITOR c7 CAPACITOR Cl2 ELECTROLYTIC O.OluF 9-18OpF 15pF CAPACITOR 5OuF 50 VOLT Ll NO. 12 AWG COPPER WIRE X 1 .18” (LOOP 0.5”) L2 NO. 12 AWG COPPER WIRE X 1” (LOOP 0.4”) L3,L4 8 TURNS OF NO. 18 AWG ENAMEL WIRE ON ‘0.25”, CLOSE WOUND Rl RESISTOR 300 OHMS 0.5 WAlT Fl2 RESISTOR 2.7K OHMS 0.25 WA-IT 01 DU2880U BOARD FR4 0.062 Specifications 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 +8l (03) 3226-1451 n Europe: Tel. +44 (1344) 869 595 Fax +44 (1344) 300 020