9
ATF-34143 Typical Noise Parameters
VDS=4V,IDS=40mA
Freq.
Fmin
Γopt
Rn/50
Ga
GHz
dB
Mag.
Ang.
-
dB
0.5
0.10
0.87
13
0.16
22.8
0.9
0.13
0.82
27
0.14
19.4
1.0
0.14
0.80
31
0.13
18.9
1.5
0.17
0.73
49
0.11
17.4
1.8
0.20
0.70
60
0.10
16.9
2.0
0.22
0.66
67
0.09
16.4
2.5
0.28
0.60
85
0.07
15.6
3.0
0.34
0.54
104
0.05
14.8
4.0
0.45
142
0.03
13.3
5.0
0.57
0.40
180
0.03
12.0
6.0
0.69
0.38
-144
0.05
10.9
7.0
0.81
0.39
-111
0.11
9.9
8.0
0.94
0.43
-82
0.20
9.1
9.0
1.06
0.51
-57
0.32
8.5
10.0
1.19
0.62
-40
0.47
8.1
ATF-34143 Typical Scattering Parameters, VDS = 4V, IDS = 40 mA
Freq.
S11
S21
S12
S22
MSG/MAG
GHz
Mag.
Ang.
dB
Mag.
Ang.
dB
Mag.
Ang.
Mag.
Ang.
dB
0.5
0.95
-40
21.56
11.973
151
0.03
0.030
68
0.33
-39
26.01
0.8
0.89
-65
21.02
11.252
135
0.04
0.042
56
0.27
-63
24.28
1.0
0.85
-82
20.19
10.217
123
0.05
0.051
48
0.26
-80
23.02
1.5
0.78
-109
18.49
8.405
104
0.06
0.064
36
0.24
-109
21.18
1.8
0.73
-131
16.93
7.024
87
0.07
0.074
27
0.22
-131
20.46
2.0
0.70
-150
15.57
6.002
73
0.08
0.081
19
0.21
-150
19.77
2.5
0.67
-167
14.36
5.223
61
0.09
0.087
12
0.20
-167
18.70
3.0
0.64
162
12.34
4.141
37
0.10
0.098
-1
0.19
165
17.75
4.0
0.63
135
10.70
3.428
16
0.11
0.108
-13
0.20
138
16.26
5.0
0.64
111
9.32
2.923
-6
0.12
0.117
-27
0.21
111
15.02
6.0
0.66
87
7.98
2.506
-26
0.12
0.124
-41
0.24
86
12.93
7.0
0.69
65
6.74
2.173
-46
0.13
0.130
-54
0.29
63
11.14
8.0
0.72
47
5.55
1.894
-65
0.13
0.134
-68
0.34
42
10.09
9.0
0.76
28
4.55
1.689
-85
0.14
0.141
-82
0.38
26
9.24
10.0
0.78
9
3.53
1.501
-104
0.15
0.145
-97
0.42
8
8.79
11.0
0.80
-11
2.39
1.317
-124
0.15
0.145
-113
0.47
-11
8.09
12.0
0.84
-29
1.02
1.125
-143
0.14
0.140
-128
0.53
-29
7.35
13.0
0.86
-44
-0.30
0.966
-160
0.13
0.133
-141
0.58
-43
6.76
14.0
0.87
-56
-1.38
0.853
-176
0.13
0.130
-152
0.62
-58
6.19
15.0
0.86
-72
-2.40
0.759
167
0.13
0.131
-165
0.65
-71
5.62
16.0
0.86
-88
-3.53
0.666
151
0.13
0.130
-180
0.68
-86
4.43
17.0
0.89
-102
-4.99
0.563
134
0.12
0.119
168
0.71
-103
3.60
18.0
0.89
-101.85 -4.99
0.563
134
0.12
0.119
168
0.71
-103
3.15
FREQUENCY (GHz)
Figure 25. MSG/MAG and |S21|2 vs.
Frequency at 4 V, 40 mA.
MSG/MAG
and
S
21
(dB)
0
4
2
8
14 16
10 12
6
18
30
25
20
15
10
5
0
-5
MSG
MAG
S21
Notes:
1. Fminvaluesat2GHzandhigherarebasedonmeasurementswhiletheFminsbelow2GHzhavebeenextrapolated.TheFminvaluesarebased
onasetof16noisefiguremeasurementsmadeat16differentimpedancesusinganATNNP5testsystem.FromthesemeasurementsatrueFmin
iscalculated.Refertothenoiseparameterapplicationsectionformoreinformation.
2. Sandnoiseparametersaremeasuredonamicrostriplinemadeon0.025inchthickaluminacarrier.Theinputreferenceplaneisattheendofthe
gatelead.Theoutputreferenceplaneisattheendofthedrainlead.Theparametersincludetheeffectoffourplatedthroughviaholesconnect-
ingsourcelandingpadsontopofthetestcarriertothemicrostripgroundplaneonthebottomsideofthecarrier.Two0.020inchdiametervia
holesareplacedwithin0.010inchfromeachsourceleadcontactpoint,oneviaoneachsideofthatpoint.