AD8432 Datasheet, PDF (10/28 Pages) Analog Devices – Dual-Channel Ultralow Noise Amplifier with Selectable Gain and Input Impedance

AD8432
20
G = 24.08dB
18
G = 21.58dB
G = 18.06dB
16
G = 12.04dB
14
12
10
8
6
4
2
0
0.01
0.1
1
10
100
FREQUENCY (MHz)
Figure 21. Output Voltage Noise vs. Frequency
0
LOW TONE
–10
HIGH TONE
–20
–30
–40
–50
–60
–70
–80
–90
–100
1
10
100
FREQUENCY (MHz)
Figure 22. IMD3 vs. Frequency
50
G = 24.08dB
45 ^{G = 12.04dB}
40
35
30
25
20
15
10
5
0
1
10
100
FREQUENCY (MHz)
Figure 23. Output Third-Output Intercept vs. Frequency
–40
HD2, 10MHz
HD2, 1MHz
–50
HD3, 10MHz
HD3, 1MHz
MEASUREMENT
–60
LIMIT
–70
–80
–90
–100
–110
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5
V_OUT (V p-p)
Figure 24. Harmonic Distortion vs. Differential Output Voltage, G = 12.04 dB
–40
–50
–60
–70
HD2, 10MHz
HD2, 1MHz
–80
HD3, 10MHz
HD3, 1MHz
MEASUREMENT
–90
LIMIT
–100
–110
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5
V_OUT (V p-p)
Figure 25. Harmonic Distortion vs. Differential Output Voltage, G = 24.08 dB
–50
–60
–70
–80
–90
–100
HD2, 10MHz, 2V p-p
HD2, 10MHz, 1V p-p
HD3, 10MHz, 2V p-p
HD3, 10MHz, 1V p-p
HD2, 1MHz, 1V p-p
HD2, 1MHz, 2V p-p
HD3, 1MHz, 2V p-p
HD3, 1MHz, 1V p-p
–110
0
5
10
15
20
25
C_L (pF)
Figure 26. Harmonic Distortion vs. Capacitive Load (CL), G = 12.04 dB
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