NE681 SERIES
TYPICAL COMMON EMITTER SCATTERING PARAMETERS
j50
90˚
120˚
60˚
j100
j25
S
11
17 GHz
150˚
30˚
j10
0
S
12
17 GHz
S
21
S
12
180˚
0.1 0.2 0.3 0.4 0.5
0˚
0.1 GHz
10
22
17 GHz
-j10
25
50
100
0
0.1 GHz
S
21
S
22
S
S
11
17 GHz
0.1 GHz
0.1 GHz
10
15
20
-150˚
-30˚
-j100
Coordinates in Ohms
Frequency in GHz
(VCE = 8 V, IC = 7 mA)
-j25
-120˚
S21
25
-60˚
NE68100
-j50
-90˚
VCE = 8 V, IC = 7 mA
FREQUENCY
S11
S21
S12
S22
K
MAG1
(MHz)
MAG
ANG
MAG
ANG
MAG
ANG
MAG
0.964
ANG
(dB)
100
200
500
0.827
0.809
0.742
0.701
0.689
0.686
0.687
0.693
0.699
0.708
0.717
0.721
0.725
0.726
0.724
0.722
-20.8
-49.5
19.513
17.981
12.631
7.498
5.182
3.959
2.687
2.048
1.662
1.431
1.250
1.105
0.989
0.868
0.773
0.673
163.9
151.0
123.0
101.5
90.4
82.0
69.7
59.1
49.8
41.1
31.7
23.3
14.2
5.9
0.012
0.022
0.038
0.047
0.049
0.053
0.061
0.071
0.081
0.096
0.116
0.125
0.146
0.169
0.179
0.192
88.3
65.5
42.2
36.7
33.0
35.0
45.9
48.7
53.2
57.0
56.6
56.9
55.9
54.9
51.9
49.0
-7.0
0.03
0.13
0.28
0.47
0.71
0.88
1.11
1.21
1.27
1.15
0.99
0.97
0.83
0.74
0.71
0.69
32.1
29.1
25.2
22.0
20.2
18.7
14.4
11.8
10.0
9.4
10.3
9.5
8.3
7.1
6.4
0.894 -16.8
0.691 -27.4
0.536 -29.0
0.483 -28.6
0.461 -29.2
0.447 -33.6
0.449 -40.6
0.454 -48.0
0.473 -57.1
0.490 -66.8
0.519 -76.0
0.549 -86.4
0.582 -96.0
0.621 -104.8
0.663 -114.1
-101.1
-139.2
-156.6
-167.2
179.8
172.2
166.6
162.1
157.0
151.7
145.5
137.6
131.2
123.6
1000
1500
2000
3000
4000
5000
6000
7000
8000
9000
10000
11000
12000
-2.0
-9.7
5.4
VCE = 8 V, IC = 20 mA
100
200
500
0.665
0.664
0.663
0.663
0.667
0.669
0.676
0.686
0.693
0.705
0.719
0.727
0.726
0.733
0.732
0.728
-47.0
-85.3
38.130
31.089
16.975
9.066
6.113
4.627
3.112
2.361
1.913
1.643
1.433
1.266
1.134
1.001
0.897
0.787
154.1
135.9
108.9
93.2
84.9
78.3
67.9
58.6
50.1
42.2
33.3
25.4
16.7
8.4
0.011
0.017
0.025
0.028
0.036
0.042
0.054
0.071
0.086
0.103
0.123
0.133
0.153
0.171
0.185
0.197
90.0
70.3
45.4
49.5
49.6
53.2
59.2
62.6
63.5
65.1
63.2
60.6
60.4
57.3
53.9
51.8
0.885 -15.0
0.753 -26.0
0.504 -30.8
0.404 -27.0
0.377 -26.3
0.369 -26.6
0.361 -31.6
0.362 -38.5
0.372 -45.8
0.386 -55.5
0.405 -65.0
0.433 -74.2
0.464 -84.5
0.500 -94.4
0.546 -103.2
0.587 -112.6
0.01
0.12
0.45
0.82
0.97
1.10
1.25
1.21
1.19
1.08
0.94
0.91
0.84
0.76
0.71
0.72
35.4
32.6
28.3
25.1
22.3
18.5
14.6
12.5
10.8
10.3
10.7
9.8
-135.8
-161.1
-171.7
-178.4
172.7
167.3
162.6
159.0
154.5
149.4
143.5
135.9
129.4
122.1
1000
1500
2000
3000
4000
5000
6000
7000
8000
9000
10000
11000
12000
8.7
7.7
6.9
6.0
0.5
-7.1
S-Parameters include bond wires.
BASE: Total 1 wire (s), 1 per bond pad, 0.0122" (309 µm) long each wire.
COLLECTOR: Total 1 wire (s), 1 per bond pad, 0.008" (203 µm) long each wire.
EMITTER: Total 2 wire (s), 1 per side, 0.0194" (494 µm) long each wire.
WIRE: 0.0007" (17.7 µm) dia., gold.
Note:
1. Gain Calculations:
2
1 + | ∆ |2 - |S11
|
2 - |S22
|
|S21
|
K 2 - 1 ). When K ≤ 1, MAG is undefined and MSG values are used.
∆ = S11 S22 - S21 S12
|S21
|
|
(K
MAG =
MSG =
, K =
,
|S12
|
|S12
2 |S12
S21|
MAG = Maximum Available Gain
MSG = Maximum Stable Gain
CEL [ CALIFORNIA EASTERN LABS ]
