TYPICAL COMMON EMITTER SCATTERING PARAMETERS
VCE = 8 V, IC = 20 mA
100 0.827 -20.8 19.513 163.9 0.012 88.3 0.964 -7.0 0.03 32.1
200 0.809 -49.5 17.981 151.0 0.022 65.5 0.894 -16.8 0.13 29.1
500 0.742 -101.1 12.631 123.0 0.038 42.2 0.691 -27.4 0.28 25.2
1000 0.701 -139.2 7.498 101.5 0.047 36.7 0.536 -29.0 0.47 22.0
1500 0.689 -156.6 5.182 90.4 0.049 33.0 0.483 -28.6 0.71 20.2
2000 0.686 -167.2 3.959 82.0 0.053 35.0 0.461 -29.2 0.88 18.7
3000 0.687 179.8 2.687 69.7 0.061 45.9 0.447 -33.6 1.11 14.4
4000 0.693 172.2 2.048 59.1 0.071 48.7 0.449 -40.6 1.21 11.8
5000 0.699 166.6 1.662 49.8 0.081 53.2 0.454 -48.0 1.27 10.0
6000 0.708 162.1 1.431 41.1 0.096 57.0 0.473 -57.1 1.15 9.4
7000 0.717 157.0 1.250 31.7 0.116 56.6 0.490 -66.8 0.99 10.3
8000 0.721 151.7 1.105 23.3 0.125 56.9 0.519 -76.0 0.97 9.5
9000 0.725 145.5 0.989 14.2 0.146 55.9 0.549 -86.4 0.83 8.3
10000 0.726 137.6 0.868 5.9 0.169 54.9 0.582 -96.0 0.74 7.1
11000 0.724 131.2 0.773 -2.0 0.179 51.9 0.621 -104.8 0.71 6.4
12000 0.722 123.6 0.673 -9.7 0.192 49.0 0.663 -114.1 0.69 5.4
100 0.665 -47.0 38.130 154.1 0.011 90.0 0.885 -15.0 0.01 35.4
200 0.664 -85.3 31.089 135.9 0.017 70.3 0.753 -26.0 0.12 32.6
500 0.663 -135.8 16.975 108.9 0.025 45.4 0.504 -30.8 0.45 28.3
1000 0.663 -161.1 9.066 93.2 0.028 49.5 0.404 -27.0 0.82 25.1
1500 0.667 -171.7 6.113 84.9 0.036 49.6 0.377 -26.3 0.97 22.3
2000 0.669 -178.4 4.627 78.3 0.042 53.2 0.369 -26.6 1.10 18.5
3000 0.676 172.7 3.112 67.9 0.054 59.2 0.361 -31.6 1.25 14.6
4000 0.686 167.3 2.361 58.6 0.071 62.6 0.362 -38.5 1.21 12.5
5000 0.693 162.6 1.913 50.1 0.086 63.5 0.372 -45.8 1.19 10.8
6000 0.705 159.0 1.643 42.2 0.103 65.1 0.386 -55.5 1.08 10.3
7000 0.719 154.5 1.433 33.3 0.123 63.2 0.405 -65.0 0.94 10.7
8000 0.727 149.4 1.266 25.4 0.133 60.6 0.433 -74.2 0.91 9.8
9000 0.726 143.5 1.134 16.7 0.153 60.4 0.464 -84.5 0.84 8.7
10000 0.733 135.9 1.001 8.4 0.171 57.3 0.500 -94.4 0.76 7.7
11000 0.732 129.4 0.897 0.5 0.185 53.9 0.546 -103.2 0.71 6.9
12000 0.728 122.1 0.787 -7.1 0.197 51.8 0.587 -112.6 0.72 6.0
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.
NE68100
VCE = 8 V, IC = 7 mA
FREQUENCY S11 S21 S12 S22 K MAG
1
(MHz) MAG ANG MAG ANG MAG ANG MAG ANG (dB)
Coordinates in Ohms
Frequency in GHz
(VCE = 8 V, IC = 7 mA)
NE681 SERIES
Note:
1. Gain Calculations:
MAG = Maximum Available Gain
MSG = Maximum Stable Gain
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
|
,
j50
j25
j10
0
-j10
-j25
-j50
-j100
j100
0
10 25 50 100
S
11
17 GHz
S
11
0.1 GHz
S
22
17 GHz
S
22
0.1 GHz
120˚
90˚
60˚
30˚
150˚
180˚
-150˚
-120˚
-90˚
-60˚
-30˚
0˚
20
15
10
0.50.40.30.20.1
S
12
17 GHz
S
12
0.1 GHz
S
21
17 GHz
S
21
0.1 GHz
S
21
25