NE681系列
典型的共发射极散射参数
(T
A
= 25°C)
1
.6
2
90
135
S
12
3 GHz的
45
S
22
3 GHz的
.2
4
10
0
.2
.6
1
2
4
10
S
11
0.5 GHz的
S
11
3 GHz的
-.2
-4
S
22
0.5 GHz的
-10
S
21
0.5 GHz的
180
S
12
0.5 GHz的
S
21
3 GHz的
0.05 0.10 0.15
0
2.5
5
-2
-.6
NE68139
V
CE
= 2.5 V，I
C
- 0.3毫安
频率
（兆赫）
50
100
200
300
400
500
600
800
1000
1500
2000
3000
MAG
0.996
0.995
0.990
0.973
0.953
0.931
0.909
0.862
0.819
0.744
0.732
0.762
S
11
-1
在欧姆坐标
在GHz的频率
(V
CE
= 2.5 V，I
C
= 3 mA）的
7.5
225
10
270
315
S
21
昂
MAG
1.089
1.079
1.071
1.032
0.993
0.991
1.008
0.908
0.871
0.729
0.632
0.438
昂
175.2
173.1
161.9
153.6
145.9
137.2
129.9
114.3
101.2
72.2
51.7
28.5
MAG
0.014
0.027
0.050
0.075
0.098
0.122
0.138
0.167
0.184
0.192
0.155
0.089
S
12
昂
83.2
80.3
74.5
68.7
64.3
59.3
53.5
42.7
33.4
14.1
3.4
8.4
MAG
S
22
昂
-1.1
-2.7
-5.7
-8.7
-11.4
-13.8
-16.4
-21.0
-25.0
-35.2
-46.3
-76.7
0.995
0.993
0.989
0.985
0.976
0.965
0.949
0.918
0.888
0.828
0.802
0.770
K
0.13
0.06
0.16
0.19
0.19
0.25
0.28
0.37
0.45
0.66
0.85
1.62
MAG
1
（ dB）的
18.9
16.0
13.3
11.4
10.1
9.1
8.6
7.4
6.8
5.8
5.0
2.3
-3.4
-11.4
-20.3
-30.7
-41.2
-50.3
-60.5
-79.9
-98.5
-140.0
-173.0
142.1
V
CE
= 2.5 V，I
C
= 1.0毫安
50
100
200
300
400
500
600
800
1000
1500
2000
3000
0.985
0.971
0.942
0.914
0.876
0.828
0.790
0.715
0.663
0.596
0.600
0.660
-6.8
-14.8
-27.5
-40.4
-53.8
-65.2
-76.9
-98.4
-117.6
-157.8
173.8
136.9
3.763
3.648
3.497
3.346
3.184
3.043
2.880
2.516
2.237
1.686
1.346
0.941
175.3
171.0
159.1
149.4
140.6
131.8
124.1
109.8
98.4
74.8
56.9
30.9
0.016
0.029
0.050
0.070
0.092
0.106
0.119
0.137
0.145
0.145
0.130
0.144
86.4
82.4
74.3
65.4
58.7
53.8
47.7
38.9
32.3
23.5
24.6
47.4
0.989
0.980
0.963
0.946
0.916
0.884
0.845
0.778
0.726
0.631
0.583
0.538
-2.8
-4.8
-9.5
-13.9
-17.8
-20.9
-24.1
-28.6
-31.9
-39.8
-48.9
-75.9
0.01
0.01
0.10
0.17
0.20
0.25
0.30
0.40
0.49
0.75
1.04
1.21
23.7
21.0
18.4
16.8
15.4
14.6
13.8
12.6
11.9
10.7
8.9
5.4
V
CE
= 2.5 V，I
C
= 3毫安
50
100
200
300
400
500
600
800
1000
1500
2000
3000
注意：
1.增益计算：
MAG =
|S
21
|
|S
12
|
0.916
0.895
0.829
0.755
0.694
0.619
0.574
0.500
0.470
0.453
0.481
0.567
-10.7
-23.5
-42.0
-60.3
-76.4
-90.0
-103.0
-125.0
-143.4
-178.4
159.4
130.6
10.426
9.954
9.011
8.067
7.165
6.329
5.660
4.558
3.815
2.684
2.078
1.442
172.1
164.8
148.6
136.2
125.8
117.1
109.8
97.8
88.7
70.7
56.4
34.1
0.015
0.027
0.046
0.061
0.074
0.083
0.089
0.099
0.106
0.123
0.141
0.197
84.7
79.0
67.6
57.7
52.4
49.8
46.7
43.3
42.0
43.6
47.3
49.7
0.975
0.972
0.910
0.826
0.754
0.690
0.634
0.552
0.496
0.412
0.362
0.302
-4.6
-9.6
-18.1
-24.5
-29.3
-32.3
-34.4
-37.1
-38.6
-43.3
-51.3
-78.6
0.07
0.05
0.19
0.29
0.35
0.43
0.50
0.65
0.77
0.99
1.11
1.08
28.4
25.7
22.9
21.2
19.9
18.8
18.0
16.6
15.6
13.4
9.7
6.9
(
K
±
K
2
- 1
).
当K
≤
1 ， MAG是未定义的值味精使用。味精=
2
2
2
|S
21
|
, K = 1 + |
| - |S
11
| - |S
22
|
,
= S
11
S
22
- S
21
S
12
|S
12
|
2 |S
12
S
21
|
MAG =最大可用增益
MSG =最大稳定增益
