MRF2947 Datasheet, PDF (6/12 Pages) Motorola, Inc – LOW NOISE TRANSISTORS

TYPICAL CHARACTERISTICS
30
25 ^{VCE = 6 V}
f = 1 GHz
20
15
OIP3
10
P1dB
5
0
–5
–10
0.1
ZO = 50 Ω
Zout MATCHED FOR
SMALL SIGNAL
MAXIMUM GAIN
1
10
100
IC, COLLECTOR CURRENT (mA)
Figure 18. Output Third Order Intercept and
Output Power at 1 dB Gain Compression
versus Collector Current
Pout (dBm)
25
VCE = 6 V
IC = 5 mA
f = 1 GHz
20
ZO = 50 Ω
Zout = MATCHED FOR SMALL
SIGNAL MAXIMUM GAIN
15
1 dB GAIN
COMPRESSION
10
5
IMD THIRD
ORDER INTERCEPT
0
–15
–10
–5
0
5
10
15
Pin (dBm)
Figure 19. 1 dB Gain Compression and
Third Order Intercept
VCE
(Vdc)
0.5
1.0
IC
(mA)
1.0
1.0
5.0
f
(GHz)
0.1
0.3
0.5
0.7
0.9
1.0
1.3
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
0.1
0.3
0.5
0.7
0.9
1.0
1.3
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
0.1
0.3
0.5
0.7
0.9
1.0
1.3
S11
S21
S12
|S11|
∠φ
|S21|
∠φ
|S12|
∠φ
0.957
–15
3.60
168
0.035
81
0.907
–42
3.33
147
0.098
64
0.833
–65
2.87
127
0.139
50
0.738
–85
2.50
112
0.165
39
0.668
–102
2.20
99
0.181
31
0.640
–110
2.07
94
0.186
28
0.579
–132
1.75
78
0.194
20
0.555
–144
1.58
70
0.197
16
0.521
–171
1.27
50
0.191
10
0.500
165
1.09
34
0.184
10
0.504
145
0.95
21
0.185
14
0.501
126
0.83
9
0.202
18
0.461
114
0.74
0
0.226
18
0.526
101
0.70
–8
0.262
20
0.559
85
0.64
–14
0.309
17
0.961
–13
3.60
170
0.028
82
0.919
–37
3.38
150
0.078
67
0.855
–58
2.96
132
0.114
54
0.762
–77
2.62
117
0.138
44
0.692
–93
2.35
105
0.154
36
0.661
–101
2.22
99
0.159
33
0.591
–122
1.90
83
0.168
26
0.562
–133
1.72
75
0.171
22
0.512
–160
1.40
56
0.169
17
0.479
177
1.20
40
0.166
19
0.474
156
1.06
27
0.172
23
0.469
139
0.94
15
0.195
28
0.455
124
0.84
5
0.230
29
0.487
109
0.80
–3
0.281
29
0.504
94
0.74
–11
0.341
25
0.807
–28
14.46
158
0.026
75
0.638
–73
10.62
127
0.058
57
0.497
–99
7.61
109
0.074
50
0.423
–120
5.85
96
0.087
48
0.379
–136
4.72
87
0.099
48
0.366
–143
4.30
83
0.105
48
0.342
–162
3.42
72
0.123
47
Table 1. Common Emitter S–Parameters
S22
|S22|
∠φ
0.985
0.932
0.845
0.770
0.707
0.680
0.617
0.593
0.555
0.535
0.526
0.528
0.528
0.521
0.530
–8
–22
–31
–40
–46
–49
–57
–62
–72
–83
–95
–107
–121
–134
–148
0.989
0.950
0.878
0.814
0.757
0.731
0.671
0.645
0.603
0.578
0.561
0.555
0.545
0.526
0.519
–7
–19
–27
–34
–41
–43
–50
–55
–65
–75
–86
–99
–112
–126
–140
0.930
–17
0.716
–38
0.558
–44
0.470
–48
0.419
–51
0.398
–53
0.358
–56
MRF2947AT1,T2 MRF2947RAT1,T2
6
MOTOROLA RF DEVICE DATA