Datasheet

AD8108/AD8109
Rev. B | Page 13 of 32
FREQUENCY (Hz)
10k 100k 1M 10M
–30
–40
–50
–60
–70
–80
–90
POWER SUPPLY REJECTION (dB)
R
L
= 150Ω
01068-024
Figure 19. AD8108 PSRR vs. Frequency
nV/√Hz
FREQUENCY (Hz)
100k 1M 10M10
100
56.3
31.6
17.8
10
5.63
3.16
10k1k100
01068-025
Figure 20. AD8108 Voltage Noise vs. Frequency
OUTPUT IMPEDANCE (Ω)
FREQUENCY (MHz)
0.1 10 100 500
1M
100k
10k
1k
100
1
01068-026
Figure 21. AD8108 Output Impedance, Disabled
5
4
3
2
1
0
10
0
–10
50ns/DIV
TYPICAL VIDEO OUT (RTO)
UPDATE INPUT
SWITCHING BETWEEN
TWO INPUTS
1V/DIV10mV/DIV
01068-027
Figure 22. AD8108 Switching Transient (Glitch)
OFF ISOLATION (dB)
FREQUENCY (Hz)
100k 10M 100M 500M
1M
V
IN
= 2V p-p
R
L
= 150Ω
–50
–60
–70
–80
–90
–100
–110
–120
–130
–40
–140
01068-028
Figure 23. AD8108 Off Isolation, Input-Output
OUTPUT IMPEDANCE (
Ω
)
1k
100
10
1
FREQUENCY (Hz)
100k 10M 100M 500M
0.1
1M
01068-029
Figure 24. AD8108 Output Impedance, Enabled