Datasheet

AD8108/AD8109
Rev. B | Page 14 of 32
POWER SUPPLY REJECTION (dB RTI)
FREQUENCY (Hz)
10k 100k 1M 10M
–30
–40
–50
–60
–70
–80
–90
R
L
= 150Ω
01068-030
Figure 25. AD8109 PSRR vs. Frequency
nV/√Hz
FREQUENCY (Hz)
100k 1M 10M10
100.0
56.3
31.6
17.8
10.0
5.63
3.16
10k1k100
01068-031
Figure 26. AD8109 Voltage Noise vs. Frequency
OUTPUT IMPEDANCE (Ω)
FREQUENCY (Hz)
100k 10M 100M 500M
1M
100k
10k
1k
100
1
01068-032
Figure 27. AD8109 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
01068-033
Figure 28. AD8109 Switching Transient (Glitch)
–60
–80
–100
–120
–130
–110
–90
–70
–50
OFF ISOLATION (dB)
FREQUENCY (Hz)
100k 10M 100M 500M
1M
–40
–140
V
OUT
= 2V p-p
R
L
= 150Ω
01068-034
Figure 29. AD8109 Off Isolation, Input-Output
OUTPUT IMPEDANCE (Ω)
1k
100
10
1
0.1
FREQUENCY (Hz)
100k 10M 100M 500M
1M
01068-035
Figure 30. AD8109 Output Impedance, Enabled