BF998_08 Datasheet, PDF (3/10 Pages) Vishay Siliconix – N-Channel Dual Gate MOS-Fieldeffect Tetrode, Depletion Mode

BF998/BF998R/BF998RW
Vishay Semiconductors
Parameter
Power gain
AGC range
Noise figure
Test condition
G_S = 2 mS, G_L = 0.5 mS,
f = 200 MHz
G_S = 3,3 mS, G_L = 1 mS,
f = 800 MHz
V_G2S = 4 to -2 V, f = 800 MHz
G_S = 2 mS, G_L = 0.5 mS,
f = 200 MHz
G_S = 3,3 mS, G_L = 1 mS,
f = 800 MHz
Symbol
G_ps
G_ps
ΔG_ps
F
F
Common Source S-Parameters
T_amb = 25 °C, unless otherwise specified
V_DS = 8 V, V_G2S = 4 V, Z₀ = 50 Ω
ID/mA
f/MHz
S11
LOG
MAG
ANG
deg
100
- 0.03
- 7.2
200
- 0.15
- 14.1
300
- 0.34
- 20.9
400
- 0.70
- 32.1
500
- 1.03
- 39.2
600
- 1.33
- 45.8
5
700
- 1.62
- 52.3
800
- 1.92
- 58.7
900
- 2.21
- 64.7
1000
- 2.49
- 70.7
1100
- 2.80
- 76.6
1200
- 3.07
- 82.5
1300
- 3.31
- 88.6
100
- 0.05
- 9.0
200
- 0.16
- 18.7
300
- 0.48
- 26.0
400
- 0.76
- 33.7
500
- 1.11
- 41.2
600
- 1.43
- 48.3
10
700
- 1.75
- 55.1
800
- 2.07
- 61.6
900
- 2.40
- 67.9
1000
- 2.70
- 74.2
1100
- 3.03
- 80.2
1200
- 3.32
- 86.4
1300
- 3.59
- 92.3
100
- 0.05
- 9.4
200
- 0.17
- 19.4
300
- 0.50
- 27.1
400
- 0.81
- 35.0
500
- 1.18
- 42.9
600
- 1.52
- 50.3
15
700
- 1.86
- 57.2
800
- 2.20
- 63.9
900
- 2.53
- 70.4
1000
- 2.86
- 76.8
1100
- 3.21
- 82.9
1200
- 3.50
- 89.0
1300
- 3.80
- 95.1
S21
LOG
MAG
ANG
deg
5.71
5.51
5.20
2.01
1.45
0.94
0.43
- 0.10
- 0.59
- 1.12
- 1.52
- 1.93
- 2.35
5.19
5.58
4.45
3.95
3.40
2.88
2.39
1.88
1.39
0.90
0.50
0.13
- 0.28
6.07
6.44
5.31
4.80
4.23
3.72
3.22
2.72
2.24
1.74
1.34
0.95
0.56
168.8
157.3
134.7
121.3
108.4
96.5
85.0
74.1
63.6
53.1
43.7
33.6
24.1
165.3
151.8
136.3
123.3
110.9
99.5
88.7
78.1
67.9
57.9
48.7
38.9
29.6
165.4
152.0
136.7
123.8
111.5
100.3
89.6
79.4
69.2
59.4
50.2
40.8
31.5
Document Number 85011
Rev. 1.8, 05-Sep-08
Min.
Typ.
28
16.5
20
40
1.0
1.5
S12
LOG
MAG
ANG
deg
- 55.94
- 50.26
- 48.51
- 46.98
- 46.40
- 46.40
- 47.02
- 47.53
- 47.81
- 48.52
- 48.53
- 46.95
- 44.44
- 56.24
- 49.97
- 47.91
- 46.48
- 45.91
- 45.91
- 46.53
- 47.13
- 47.41
- 48.21
- 48.43
- 47.04
- 44.54
- 55.74
- 49.47
- 47.41
- 45.98
- 45.41
- 45.41
- 46.13
- 46.63
- 47.00
- 47.91
- 48.33
- 47.04
- 44.53
83.6
76.8
67.7
62.8
57.8
57.3
58.9
63.3
73.1
83.5
102.1
120.4
131.7
81.9
75.0
67.2
61.8
56.3
55.8
56.7
60.7
69.9
80.0
98.9
118.2
130.5
81.4
74.6
66.4
60.8
55.1
54.4
54.9
58.5
67.3
76.7
95.2
115.3
128.7
Max.
Unit
dB
dB
dB
dB
dB
S22
LOG
MAG
ANG
deg
- 0.08
- 0.13
- 0.29
- 0.44
- 0.59
- 0.76
- 0.91
- 1.08
- 1.26
- 1.45
- 1.57
- 1.75
- 1.92
- 0.11
- 0.21
- 0.33
- 0.47
- 0.65
- 0.81
- 0.96
- 1.12
- 1.32
- 1.49
- 1.61
- 1.79
- 1.96
- 0.15
- 0.24
- 0.36
- 0.52
- 0.68
- 0.84
- 1.02
- 1.16
- 1.35
- 1.53
- 1.66
- 1.84
- 2.00
- 3.6
- 7.0
- 9.7
- 12.3
- 15.1
- 17.4
- 19.7
- 22.0
- 24.3
- 26.2
- 28.4
- 30.5
- 32.7
- 3.5
- 7.2
- 9.8
- 12.6
- 15.3
- 17.8
- 20.0
- 22.4
- 24.6
- 26.6
- 28.8
- 31.0
- 33.3
- 3.6
- 7.3
- 10.0
- 12.9
- 15.7
- 18.0
- 20.4
- 22.7
- 25.0
- 27.1
- 29.4
- 31.6
- 33.9
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