BF5020...
Drain current ID = ƒ(VG2S)
VDS = 5 V, RG1 = Parameter in kΩ
28
mA
82K
24
22
20
18
120K
16
14
12
10
8
6
4
2
0
0 0.5 1 1.5 2 2.5 3 V 4
VG2S
AGC characteristic AGC = ƒ(VG2S)
f = 50 MHz
measured in test circuit, see page 7
0
Rg=120KOHm
dB
Rg=82KOHm
-20
-30
-40
-50
-60
-70
-80
0.5 1 1.5 2 2.5 3 V
4
VG2S
AGC characteristic AGC = ƒ(VG2S)
f = 800 MHz
measured in test circuit, see page 7
0
dB Rg1=120KOHm
-10
Rg1=82KOHm
-15
-20
-25
-30
-35
-40
-45
-50
-55
-60
-65
-70
0.5 1 1.5 2 2.5 3 V
4
VG2S
Crossmodulation Vunw = (AGC)
VDS = 5 V
measured in test circuit, see page 7
107
dBµV
RG1=82KOHm_22m
104
103
102
101
100
99
98
97
96
95
94
93
92
0
RG1=120KOHm_15m
5 10 15 20 25 30 35 40 dB 50
AGC
6
2009-10-01