BF998(1999) 데이터 시트보기 (PDF) - Vishay Semiconductors
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BF998 Datasheet PDF : 9 Pages
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10
f= 800MHz
0
–10
–20
–30
–40
4V
3V
2V
1V
0
–0.2V
–0.4V
VG2S=–0.8V
–50
–1
12818
–0.5 0.0 0.5 1.0 1.5
VG1S – Gate 1 Source Voltage ( V )
Figure 7. Transducer Gain vs. Gate 1 Source Voltage
32
VDS=8V
28 f=1MHz
24
VG2S=4V
3V
20
16
2V
12
8
4
0
0
12819
1V
0
4 8 12 16 20 24 28
ID – Drain Current ( mA )
Figure 8. Forward Transadmittance vs. Drain Current
20
18
16
14
12
10
8
6
4
2
0
0
12820
f=1300MHz
1000MHz
700MHz
400MHz
100MHz
VDS=8V
VG2S=4V
ID=10mA
f=100...1300MHz
2 4 6 8 10 12 14
Re (y11) ( mS )
Figure 9. Short Circuit Input Admittance
BF998/BF998R/BF998RW
Vishay Telefunken
5
0
VDS=8V
VG2S=4V
–5 f=100...1300MHz
f=100MHz
–10
ID=5mA
–15
10mA
–20 20mA
–25
400MHz
700MHz
–30
1000MHz
–35
1300MHz
–40
0 4 8 12 16 20 24 28 32
12821
Re (y21) ( mS )
Figure 10. Short Circuit Forward Transfer Admittance
9
8
f=1300MHz
7
6
1000MHz
5
4
700MHz
3
2
1
0
0
12822
400MHz
100MHz
VDS=15V
VG2S=4V
ID=10mA
f=100...1300MHz
0.25 0.50 0.75 1.00 1.25 1.50
Re (y22) ( mS )
Figure 11. Short Circuit Output Admittance
Document Number 85011
Rev. 4, 23-Jun-99
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