![](http://datasheet.mmic.net.cn/230000/NE68518-T1_datasheet_15597266/NE68518-T1_9.png)
NE68539
V
CE
= 0.5 V, I
C
= 0.5 mA
FREQUENCY
S
11
S
21
S
12
S
22
K
MAG
1
GHz
0.1
0.4
0.8
1.0
1.5
2.0
2.5
3.0
MAG
0.983
0.949
0.839
0.771
0.599
0.477
0.424
0.425
ANG
-4.600
-24.900
-49.500
-61.500
-93.900
-126.900
-160.200
171.800
MAG
1.823
1.773
1.684
1.629
1.483
1.320
1.180
1.042
ANG
MAG
0.028
0.111
0.204
0.243
0.299
0.320
0.310
0.294
ANG
83.300
71.600
56.000
47.900
31.300
18.900
9.800
4.300
MAG
0.996
0.977
0.882
0.832
0.687
0.572
0.486
0.430
ANG
-3.000
-15.000
-29.200
-35.600
-50.600
-63.000
-75.500
-88.700
(dB)
18.136
12.034
9.167
8.263
6.955
6.154
5.805
3.506
TYPICAL SCATTERING PARAMETERS
(T
A
= 25
°
C)
172.300
153.300
129.000
117.900
91.400
69.800
52.000
37.100
0.144
0.194
0.349
0.435
0.624
0.786
0.944
1.107
V
CE
= 1.0 V, I
C
= 1.0 mA
V
CE
= 3.0 V, I
C
= 10 mA
V
CE
= 2.5 V, I
C
= 1.0 mA
0.1
0.4
0.8
1.0
1.5
2.0
2.5
3.0
4.0
0.965
0.906
0.753
0.667
0.478
0.369
0.339
0.359
0.452
-6.400
-29.000
-56.200
-69.300
-103.100
-138.400
-173.000
160.600
126.000
3.534
3.355
3.000
2.801
2.346
1.960
1.682
1.457
1.171
171.400
151.200
126.600
116.000
91.800
73.000
57.500
44.300
22.900
0.025
0.088
0.156
0.179
0.217
0.236
0.238
0.247
0.268
86.300
71.600
55.400
48.400
36.900
28.900
25.800
23.100
23.000
0.994
0.951
0.823
0.757
0.600
0.488
0.405
0.349
0.304
-3.900
-17.600
-32.200
-38.400
-51.500
-62.100
-73.300
-85.900
-117.800
0.082
0.186
0.379
0.469
0.674
0.846
1.006
1.119
1.199
21.503
15.812
12.840
11.945
10.339
9.193
8.021
5.613
3.709
0.1
0.4
0.8
1.0
1.5
2.0
2.5
3.0
4.0
5.0
0.729
0.417
0.196
0.133
0.060
0.101
0.164
0.230
0.349
0.450
-20.700
-58.000
-81.600
-92.600
-155.000
144.800
125.900
117.000
104.600
93.100
21.452
12.831
7.430
6.128
4.250
3.281
2.687
2.295
1.808
1.506
158.500
117.900
96.000
89.300
76.100
65.500
56.400
47.600
31.300
16.700
0.016
0.044
0.077
0.092
0.133
0.171
0.207
0.246
0.311
0.367
80.400
68.700
67.000
65.700
64.000
61.200
57.300
53.400
44.000
33.500
0.933
0.639
0.472
0.426
0.357
0.303
0.249
0.208
0.160
0.199 -160.400
-12.700
-31.100
-33.200
-33.900
-37.400
-44.600
-54.500
-67.800
-112.500
0.233
0.689
0.927
0.984
1.033
1.054
1.068
1.055
1.035
1.011
31.273
24.648
19.845
18.235
13.938
11.406
9.535
8.262
6.491
5.500
0.1
0.4
0.8
1.0
1.5
2.0
2.5
3.0
4.0
0.982
0.921
0.775
0.700
0.502
0.364
0.300
0.309
0.401
-4.000
-24.700
-48.800
-60.600
-89.800
-122.500
-157.800
170.700
130.100
3.461
3.323
3.034
2.877
2.460
2.089
1.805
1.578
1.274
173.900
154.500
131.200
121.000
97.900
79.200
64.200
50.800
29.000
0.017
0.071
0.125
0.145
0.182
0.197
0.207
0.216
0.249
84.600
73.000
60.000
53.700
42.900
37.100
33.300
33.300
34.000
0.998
0.966
0.875
0.816
0.684
0.583
0.501
0.448
0.386
-2.900
-14.200
-25.800
-30.800
-41.100
-49.700
-58.100
-68.100
-94.100
0.109
0.195
0.363
0.452
0.658
0.834
0.996
1.100
1.146
23.088
16.703
13.851
12.976
11.309
10.255
9.405
6.713
4.768
Note:
1. Gain Calculation:
MAG =
|S
21
|
|S
12
|
K - 1
).
(
K
±
= S
11
S
22
- S
21
S
12
,
When K
≤
1, MAG is undefined and MSG values are used. MSG =
|S
21
|
|S
12
|
, K =
1 + |
| - |S
11
| - |S
22
|
2 |S
12
S
21
|
2
MAG = Maximum Available Gain
MSG = Maximum Stable Gain
NE685 SERIES
Coordinates in Ohms
Frequency in GHz
(V
CE
= 2.5 V, I
C
= 1 mA)
20
10
5
4
3
2
1.5
1
.8
.6
.4
.2
-.2
-.4
-.6
-.8
-1
-1.5
-2
-3
-4
-5
-10
-20
0
20
10
1.5
.8
.6
.4
.2
5
4
S
11
3
2
1
S
22
0.1 GHz
0.1 GHz
S
22
4 GHz
S
11
4 GHz
90
270
180
225
315
135
45
0
3
2
1
.4
.3
.2
.1
S
12
0.1 GHz
S
21
4 GHz
S
21
0.1 GHz
S
12
4 GHz