DC-to-Microwave, Low-Noise Amplifier
______________________________________________________________Pin Description
PIN
1
2, 4
3
NAME
OUT
GND
IN
FUNCTION
Amplifier Output. Use a series blocking capacitor with less than 3 ? reactance at your lowest operat-
ing frequency. Bias with an external resistor and an optional RF choke.
Ground Connection. For optimum performance, provide a low-inductance connection to the ground
plane.
Amplifier Input. Use a series blocking capacitor with less than 3 ? reactance at your lowest operating
frequency.
Table 1. Typical Scattering Parameters
(I D = 16mA, Z 0 = 50 ? , T A = +25°C)
FREQUENCY
(GHz)
0.1
0.2
0.3
0.4
0.5
0.6
0.8
1.0
1.5
2.0
2.5
3.0
3.5
4.0
S11
(mag)
0.12
0.11
0.13
0.14
0.15
0.15
0.13
0.12
0.32
0.31
0.32
0.20
0.24
0.31
S11
(ang)
-11
-44
-58
-78
-89
77
50
16
-60
-72
-76
-70
-64
-68
S21
(dB)
19.0
18.8
18.6
18.5
18.3
18.1
17.4
16.6
14.1
10.3
7.9
5.9
3.0
-0.7
S21
(mag)
8.90
8.73
8.53
8.43
8.26
7.99
7.45
6.79
5.07
3.27
2.48
1.98
1.41
0.92
S21
(ang)
173
166
158
151
144
137
123
109
79
59
47
32
13
17
S12
(dB)
-22.6
-21.9
-21.6
-21.6
-21.6
-21.6
-21.6
-20.9
-21.8
-22.2
-22.6
-22.3
-21.4
-23.0
S12
(mag)
0.074
0.081
0.083
0.083
0.083
0.083
0.083
0.090
0.081
0.078
0.074
0.077
0.086
0.070
S12
(ang)
2
4
5
6
7
9
10
10
11
18
25
37
30
35
S22
(mag)
0.05
0.03
0.04
0.06
0.08
0.09
0.10
0.10
0.21
0.22
0.26
0.24
0.19
0.24
S22
(ang)
53
12
45
32
34
26
23
35
-86
-72
-53
-29
47
82
K
1.08
1.06
1.05
1.06
1.06
1.07
1.10
1.11
1.29
1.87
2.44
3.10
3.83
6.66
4
_______________________________________________________________________________________
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