DC-to-Microwave, +5V Low-Noise Amplifier
______________________________________________________________Pin Description
PIN
1
2
3
4
NAME
IN
GND
OUT
V CC
FUNCTION
Amplifier Input. Use a series blocking capacitor with less than 3 ? reactance at your lowest operating
frequency.
Ground Connection. For optimum performance, provide a low-inductance connection to the ground
plane.
Amplifier Output. Use a series blocking capacitor with less than 3 ? reactance at your lowest operat-
ing frequency.
Supply Connection. Bypass directly at the package pin. The value of the bypass capacitor is deter-
mined by the lowest operating frequency and is typically the same as the blocking capacitor value.
For long V CC lines, additional bypassing may be necessary.
Table 1. Typical Scattering Parameters
(V CC = +5V, Z 0 = 50 ? , T A = +25°C.)
FREQUENCY
(GHz)
0.05
0.10
0.20
0.30
0.40
0.50
0.60
0.70
0.80
0.90
1.00
1.20
1.40
1.60
1.80
2.00
2.20
2.40
2.50
S11
(mag)
0.17
0.17
0.16
0.14
0.16
0.16
0.17
0.18
0.18
0.20
0.20
0.19
0.16
0.15
0.22
0.33
0.41
0.44
0.44
S11
(ang)
-3
-6
9
8
0
-7
-17
-26
-39
-54
-66
-86
-86
-66
-40
-36
-38
-37
-37
S21
(dB)
19.8
19.8
19.7
19.7
19.6
19.5
19.3
19.0
18.6
18.0
17.4
15.7
13.4
10.6
7.4
4.6
3.1
2.5
2.3
S21
(mag)
9.76
9.72
9.69
9.70
9.52
9.43
9.21
8.93
8.46
7.92
7.40
6.10
4.69
3.40
2.35
1.70
1.43
1.34
1.30
S21
(ang)
177
172
161
151
140
129
119
107
95
84
73
51
31
14
5
4
6
6
4
S12
(dB)
-37.8
-36.7
-35.8
-35.0
-33.8
-33.2
-32.3
-31.7
-31.1
-29.5
-28.7
-26.9
-25.5
-24.4
-24.4
-25.3
-26.5
-28.6
-29.5
S12
(mag)
0.013
0.015
0.016
0.018
0.020
0.022
0.024
0.026
0.028
0.033
0.037
0.045
0.053
0.060
0.060
0.055
0.047
0.037
0.034
S12
(ang)
8
14
23
28
32
34
37
41
44
48
50
52
51
44
32
22
21
22
22
S22
(mag)
0.42
0.39
0.37
0.35
0.32
0.28
0.25
0.21
0.17
0.13
0.10
0.05
0.12
0.24
0.35
0.43
0.46
0.49
0.49
S22
(ang)
-5
-6
-13
-19
-26
-34
-43
-53
-62
-71
-76
-49
-12
-17
-27
-33
-33
-29
-25
K
3.18
2.92
2.70
2.54
2.31
2.24
2.12
2.09
2.10
1.91
1.88
1.88
2.03
2.32
3.01
3.97
4.85
6.26
7.05
4
_______________________________________________________________________________________
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