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BF988 Datasheet(PDF) 5 Page - Vishay Siliconix

Part No. BF988
Description  N-Channel Dual Gate MOS-Fieldeffect Tetrode, Depletion Mode
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Maker  VISHAY [Vishay Siliconix]
Homepage  http://www.vishay.com
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BF988 Datasheet(HTML) 5 Page - Vishay Siliconix

   
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BF988
Vishay Telefunken
www.vishay.de
• FaxBack +1-408-970-5600
Rev. 4, 08-Jul-99
5 (8)
Document Number 85007
0
0.8
1.6
2.4
3.2
4.0
246
8
10
12
VDS – Drain Source Voltage ( V )
12815
VG2S=4V
VG1S=0
f=1MHz
Figure 7. Output Capacitance vs. Drain Source Voltage
–50
–40
–30
–20
–10
0
10
–1
–0.5
0.0
0.5
1.0
1.5
VG1S – Gate 1 Source Voltage ( V )
12818
4V
0
2V
1V
3V
f= 800MHz
–0.2V
VG2S=–0.8V
–0.4V
Figure 8. Transducer Gain vs. Gate 1 Source Voltage
0
4
8
12
16
20
24
28
32
0
4
8
1216
2024
28
ID – Drain Current ( mA )
12819
VDS=8V
f=1MHz
VG2S=4V
2V
1V
0
3V
Figure 9. Forward Transadmittance vs. Drain Current
0
2
4
6
8
10
12
14
16
18
20
02
46
8
10
12
14
Re (y11) ( mS )
12820
VDS=8V
VG2S=4V
ID=10mA
f=100...1300MHz
f=1300MHz
700MHz
400MHz
1000MHz
100MHz
Figure 10. Short Circuit Input Admittance
–40
–35
–30
–25
–20
–15
–10
–5
0
5
0
4
8
12
16
20
24
28
32
Re (y21) ( mS )
12821
VDS=8V
VG2S=4V
f=100...1300MHz
f=100MHz
1300MHz
1000MHz
400MHz
700MHz
ID=5mA
10mA
20mA
Figure 11. Short Circuit Forward Transfer Admittance
0
1
2
3
4
5
6
7
8
9
0
0.25
0.50
0.75
1.00
1.25
1.50
Re (y22) ( mS )
12822
VDS=15V
VG2S=4V
ID=10mA
f=100...1300MHz
f=1300MHz
1000MHz
400MHz
100MHz
700MHz
Figure 12. Short Circuit Output Admittance


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