VCE = 2.5 V, IC = 0.3 mA
FREQUENCY S11 S21 S12 S22 K MAG
1
(MHz) MAG ANG MAG ANG MAG ANG MAG ANG (dB)
NE68139
TYPICAL COMMON EMITTER SCATTERING PARAMETERS (TA = 25°C)
50 0.996 -3.4 1.089 175.2 0.014 83.2 0.995 -1.1 0.13 18.9
100 0.995 -11.4 1.079 173.1 0.027 80.3 0.993 -2.7 0.06 16.0
200 0.990 -20.3 1.071 161.9 0.050 74.5 0.989 -5.7 0.16 13.3
300 0.973 -30.7 1.032 153.6 0.075 68.7 0.985 -8.7 0.19 11.4
400 0.953 -41.2 0.993 145.9 0.098 64.3 0.976 -11.4 0.19 10.1
500 0.931 -50.3 0.991 137.2 0.122 59.3 0.965 -13.8 0.25 9.1
600 0.909 -60.5 1.008 129.9 0.138 53.5 0.949 -16.4 0.28 8.6
800 0.862 -79.9 0.908 114.3 0.167 42.7 0.918 -21.0 0.37 7.4
1000 0.819 -98.5 0.871 101.2 0.184 33.4 0.888 -25.0 0.45 6.8
1500 0.744 -140.0 0.729 72.2 0.192 14.1 0.828 -35.2 0.66 5.8
2000 0.732 -173.0 0.632 51.7 0.155 3.4 0.802 -46.3 0.85 5.0
3000 0.762 142.1 0.438 28.5 0.089 8.4 0.770 -76.7 1.62 2.3
50 0.985 -6.8 3.763 175.3 0.016 86.4 0.989 -2.8 0.01 23.7
100 0.971 -14.8 3.648 171.0 0.029 82.4 0.980 -4.8 0.01 21.0
200 0.942 -27.5 3.497 159.1 0.050 74.3 0.963 -9.5 0.10 18.4
300 0.914 -40.4 3.346 149.4 0.070 65.4 0.946 -13.9 0.17 16.8
400 0.876 -53.8 3.184 140.6 0.092 58.7 0.916 -17.8 0.20 15.4
500 0.828 -65.2 3.043 131.8 0.106 53.8 0.884 -20.9 0.25 14.6
600 0.790 -76.9 2.880 124.1 0.119 47.7 0.845 -24.1 0.30 13.8
800 0.715 -98.4 2.516 109.8 0.137 38.9 0.778 -28.6 0.40 12.6
1000 0.663 -117.6 2.237 98.4 0.145 32.3 0.726 -31.9 0.49 11.9
1500 0.596 -157.8 1.686 74.8 0.145 23.5 0.631 -39.8 0.75 10.7
2000 0.600 173.8 1.346 56.9 0.130 24.6 0.583 -48.9 1.04 8.9
3000 0.660 136.9 0.941 30.9 0.144 47.4 0.538 -75.9 1.21 5.4
VCE = 2.5 V, IC = 1.0 mA
50 0.916 -10.7 10.426 172.1 0.015 84.7 0.975 -4.6 0.07 28.4
100 0.895 -23.5 9.954 164.8 0.027 79.0 0.972 -9.6 0.05 25.7
200 0.829 -42.0 9.011 148.6 0.046 67.6 0.910 -18.1 0.19 22.9
300 0.755 -60.3 8.067 136.2 0.061 57.7 0.826 -24.5 0.29 21.2
400 0.694 -76.4 7.165 125.8 0.074 52.4 0.754 -29.3 0.35 19.9
500 0.619 -90.0 6.329 117.1 0.083 49.8 0.690 -32.3 0.43 18.8
600 0.574 -103.0 5.660 109.8 0.089 46.7 0.634 -34.4 0.50 18.0
800 0.500 -125.0 4.558 97.8 0.099 43.3 0.552 -37.1 0.65 16.6
1000 0.470 -143.4 3.815 88.7 0.106 42.0 0.496 -38.6 0.77 15.6
1500 0.453 -178.4 2.684 70.7 0.123 43.6 0.412 -43.3 0.99 13.4
2000 0.481 159.4 2.078 56.4 0.141 47.3 0.362 -51.3 1.11 9.7
3000 0.567 130.6 1.442 34.1 0.197 49.7 0.302 -78.6 1.08 6.9
VCE = 2.5 V, IC = 3 mA
NE681 SERIES
Coordinates in Ohms
Frequency in GHz
(VCE = 2.5 V, IC = 3 mA)
10
4
2
1
.6
.2
-.2
-.6
-1
-2
-4
-10
0
S
11
3 GHz
S
22
0.5 GHz
S
22
3 GHz
10
4
S
11
0.5 GHz
.6.2 21
90˚
270˚
180˚
225˚
315˚
135˚ 45˚
0˚
10
0.150.100.05
7.5
5
2.5
S
12
3 GHz
S
12
0.5 GHz
S
21
3 GHz
S
21
0.5 GHz
MAG =
|S
21
|
|S
12
|
K - 1 ).
2
(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
2
2
2 |S
12
S
21
|
,
Note:
1. Gain Calculations:
MAG = Maximum Available Gain
MSG = Maximum Stable Gain