Datasheet

AD8021
Rev. F | Page 15 of 28
100k 10M 100M
–20
10k 1M
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
01888-041
FREQUENCY (Hz)
CMRR (dB)
Figure 41. CMRR vs. Frequency (See Figure 51)
100k 1G10M 100M
300
10k 1M
100
30
10
3
1
0.3
0.1
0.03
0.01
0.003
01888-042
FREQUENCY (Hz)
OUTPUT IMPEDANCE (Ω)
Figure 42. Output Impedance vs. Frequency, Chip Enabled
(See
Figure 52)
4V
2V
2V
1V
0 100 200 300 400 500
TIME (ns)
01888-043
V
OUTPUT
t
EN
= 45ns
t
DIS
= 50ns
DISABLE
Figure 43. Enable (t
EN
)/Disable (t
DIS
) Time vs. V
OUT
(See Figure 53)
1M 1G100M
0
0.1M 10M
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
01888-044
DISABLED ISOLATION (dB)
FREQUENCY (Hz)
Figure 44. Input-to-Output Isolation, Chip Disabled (See Figure 54)
01888-045
100k 1G10M 100M
300k
10k 1M
100k
30k
10k
3k
1k
300
100
30
10
3
FREQUENCY (Hz)
OUTPUT IMPEDANCE (Ω)
Figure 45. Output Impedance vs. Frequency, Chip Disabled
(See
Figure 55)
1M 500M100M10k 10M100k
PSRR (dB)
0
–10
–30
–50
–70
–80
–100
–20
–40
–60
–90
01888-046
V
S
= ±2.5V
V
S
= ±12V
V
S
= ±5V
FREQUENCY (Hz)
–PSRR
+PSRR
Figure 46. PSRR vs. Frequency and Supply Voltage
(See
Figure 56 and Figure 57)