Datasheet

2007-04-20
5
BF998...
Drain current I
D
= ƒ(V
G1S
)
V
DS
= 5V
V
G2S
= Parameter
-1 -0.75 -0.5 -0.25 0 0.25 0.5
V
1
V
G1S
0
5
10
15
20
mA
30
I
D
4V
2V
1V
0V
Power gain G
ps
= ƒ (V
G2S
)
f = 45 MHz
0 1 2
V
4
V
G2S
0
5
10
15
20
dB
30
G
ps
Noise figure F = ƒ (V
G2S
)
f = 45 MHz
0 1 2
V
4
V
G2S
0
1
2
3
4
5
6
7
8
dB
10
F
Noise figure F = ƒ (V
G2S
)
f = 800 MHz
0 1 2
V
4
V
G2S
0
1
2
3
dB
5
F