Datasheet

Data Sheet AD8432
Rev. C | Page 9 of 32
0.1 1 10 100
FREQUENCY (MHz)
0.1
1
10
100
OUTPUT IMPEDANCE (kΩ)
08341-034
Figure 15. Output Impedance vs. Frequency in Disable Mode
0.1
1
10
1 10 100 1k
INPUT-REFERRED VOLTAGE NOISE (nV/√Hz)
f = 1MHz
SOURCE RESISTANCE (Ω)
R
S
THERMAL
NOISE ALONE
08341-036
Figure 16. Input-Referred Voltage Noise vs. Source Resistance (R
S
)
1
10
100
1 10 100 1k
OUTPUT-REFERRED VOLTAGE NOISE (nV/√Hz)
f = 1MHz
SOURCE RESISTANCE (Ω)
G = 12.04dB
G = 18.06dB
G = 21.58dB
08341-035
G = 24.08dB
Figure 17. Output-Referred Voltage Noise vs. Source Resistance (R
S
)
0.70
0.75
0.80
0.85
0.90
0.95
1.00
–50 –30 –10 10 30 50 70 90
INPUT VOLTAGE NOISE (nV/√Hz)
TEMPERATURE (°C)
08341-037
Figure 18. Input Voltage Noise vs. Temperature
2
4
6
8
10
12
14
16
–50 –30 –10 10 30 50 70 90
OUTPUT VOLTAGE NOISE (nV/√Hz)
TEMPERATURE (°C)
G = 12.04dB
G = 18.06dB
G = 21.58dB
G = 24.08dB
08341-038
Figure 19. Output Voltage Noise vs. Temperature
0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
0.01 0.1 1 10 100
INPUT VOLTAGE NOISE (nV/√Hz)
FREQUENCY (MHz)
08341-221
G = 24.08dB
G = 21.58dB
G = 18.06dB
G = 12.04dB
Figure 20. Input Voltage Noise vs. Frequency