an amp company rf mosfet power transistor, 5w, 28v 100 - 500 mhz UF2805B features l n-channel enhancement mode device l duos structure l lower capacitances for broadband operation 0 common source configuration l lower noise floor l 100 mhz to 500 mhz operation .* 9 v2.00 a b e absolute maximum ratings at 25c electrical characteristics at 25c specifications subject to change without notice. m/a-com, inc. north america: tel. (800) 366-2266 n asia/pacific: tel. +81 (03) 3226-1671 fax (800) 618-8883 fax +81 (03) 3226-1451 l europe: tel. +44 (1344) 869 595 fax +44 (1344) 300 020
rf mosfet power transistor, 5w, 28v UF2805B v2.00 typical broadband performance curves capacitances vs voltage power output vs voltage f=l .o mhz p,,=o.3 w i,,=50 ma f&o0 mhz 7 a7 1 5 10 15 20 25 30 5 10 15 20 25 30 35 v,, (w v,, (v) gain vs frequency v,,=28 v po,+o w i,,=50 ma xi= 100 200 500 frequency (mhz) efficiency vs frequency v,,=28 v i,,=50 ma p,,=5.0 w w 0 ii :: 50 - loo 200 300 400 500 frequency (mhz) power output vs power input v,,=28 v i,,=50 ma 7 y 0.025 0.05 0.1 0.15 0.2 0.25 0.3 power input(w) ecifications subject to change without notice. m/a-com, inc. north america: tel. (800) 366-2266 n asia/pacific: tel. +81 (03) 3226-1671 m europe: tel. +44 (1344) 869 595 fax (800) 618-8883 fax t81 (03) 3226-1451 fax +44 (1344) 300 020
rf mosfet power transistor, 5w, 28v u f2805b typical device impedance frequency (mhz) 100 300 500 z;, (ohms) z load (ohms) 15.0 - j 80.0 35.0 + j 55.0 8.0 - j 43.0 29.0 + j 40.0 4.0 - j 29.0 28.0 + j 29.0 d v,,=28 v, i,=50 ma, pout=5.0 watts z,, is the series equivalent input impedance of the device from gate to source. z load i&the optimum series equivalent load impedance as measured from drain to drain. rf test fixture c8 c9 c4, to, 11 c2 c3 cs cq 7, 13, 16 cl 12 cl5 cl4 rl pi ll l2 l3 l4 l5 lb l7 parts list l.opf 3.9pf 4.7pf s&f 8.m 1spf 68dpf 82opf .oluf souf sov. 10k ohm UF2805B 9 turns of nd. 24 a?jg 7 turns of no. 22 avg 3 turns of no. 24 awg dn ferrite behd l30? df 50 ohm transmission line .7u? df so ohm transhissilyn line .2p of so ohm tran!zmission line 1.85? of 50 ohm transmission line m/a-com, inc. north america: specifications subject to change without notice. tel. (800) 366-2266 fax (800) 618-8883 m asia/pacific: tel. +81 (03) 3226-1671 fax +81 (03) 3226-1451 m europe: tel. +44 (1344) 869 595 fax +44 (1344) 300 020
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