NE685 SERIES
TYPICAL SCATTERING PARAMETERS (TA = 25°C)
90˚
1
.8
1.5
.6
2
.4
135˚
45˚
S22
4 GHz
3
4
.2
5
S
12
S22
0.1 GHz
S11
4 GHz
0.1 GHz
S12
10
20
4 GHz
4
0
.2
.4 .6
.8
1
1.5
2
3
5
10 20
180˚
.1
.2
21
.3
.4
0˚
S
21
-20
-10
S11
0.1 GHz
S
4 GHz
0.1 GHz
1
-5
-4
-.2
Coordinates in Ohms
Frequency in GHz
2
-3
-.4
315˚
225˚
3
-2
(VCE = 2.5 V, IC = 1 mA)
-.6
-1.5
-.8
-1
270˚
NE68539
VCE = 0.5 V, IC = 0.5 mA
FREQUENCY
S11
S21
S12
S22
K
MAG1
(dB)
GHz
MAG
ANG
MAG
ANG
172.300
MAG
ANG
MAG
ANG
0.1
0.4
0.8
1.0
1.5
2.0
2.5
3.0
0.983
0.949
0.839
0.771
0.599
0.477 -126.900
0.424 -160.200
0.425
-4.600
1.823
1.773
1.684
1.629
1.483
1.320
1.180
1.042
0.028
0.111
0.204
0.243
0.299
0.320
0.310
0.294
83.300
71.600
56.000
47.900
31.300
18.900
9.800
0.996
0.977
0.882
0.832
0.687
0.572
0.486
0.430
-3.000
-15.000
-29.200
-35.600
-50.600
-63.000
-75.500
-88.700
0.144
0.194
0.349
0.435
0.624
0.786
0.944
1.107
18.136
12.034
9.167
8.263
6.955
6.154
5.805
3.506
-24.900
-49.500
-61.500
-93.900
153.300
129.000
117.900
91.400
69.800
52.000
37.100
171.800
4.300
VCE = 1.0 V, IC = 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 -103.100
0.369 -138.400
0.339 -173.000
-6.400
-29.000
-56.200
-69.300
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
-3.900
-17.600
-32.200
-38.400
-51.500
-62.100
-73.300
-85.900
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
0.359
0.452
160.600
126.000
0.304 -117.800
VCE = 2.5 V, IC = 1.0 mA
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 -122.500
0.300 -157.800
0.309
0.401
-4.000
-24.700
-48.800
-60.600
-89.800
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
170.700
130.100
6.713
4.768
VCE = 3.0 V, IC = 10 mA
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
-20.700
-58.000
-81.600
-92.600
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
-12.700
-31.100
-33.200
-33.900
-37.400
-44.600
-54.500
-67.800
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
0.060 -155.000
0.101
0.164
0.230
0.349
0.450
144.800
125.900
117.000
104.600
93.100
0.160 -112.500
0.199 -160.400
Note:
1. Gain Calculation:
2
1 + | Δ |2 - |S11
|
2 - |S22
S21|
|
|S21
|S12
|
|
K 2 - 1 ). When K ≤ 1, MAG is undefined and MSG values are used.
Δ = S11 S22 - S21 S12
|S21
|S12
|
|
(K
MAG =
MSG =
, K =
,
2 |S12
MAG = Maximum Available Gain
MSG = Maximum Stable Gain
CEL [ CALIFORNIA EASTERN LABS ]
