Datasheet

AD8628/AD8629/AD8630
Rev. I | Page 8 of 24
FREQUENCY (Hz)
CLOSED-LOOP GAIN (dB)
70
60
50
40
30
20
0
–10
–20
10
–30
1k 10k 100k 1M 10M
02735-015
V
S
= 2.7V
C
L
= 20pF
R
L
= 2kΩ
A
V
= 100
A
V
= 10
A
V
= 1
Figure 17. Closed-Loop Gain vs. Frequency
FREQUENCY (Hz)
CLOSED-LOOP GAIN (dB)
70
60
50
40
30
20
0
–10
–20
10
–30
1k 10k 100k 1M 10M
02735-016
V
S
= 5V
C
L
= 20pF
R
L
= 2kΩ
A
V
= 100
A
V
= 10
A
V
= 1
Figure 18. Closed-Loop Gain vs. Frequency
FREQUENCY (Hz)
OUTPUT IMPEDANCE (Ω)
300
270
240
210
180
150
90
60
30
120
0
100 1k 10k 100k 1M 10M 100M
02735-017
A
V
= 100
A
V
= 10
A
V
= 1
V
S
= 2.7V
Figure 19. Output Impedance vs. Frequency
FREQUENCY (Hz)
OUTPUT IMPEDANCE (Ω)
300
270
240
210
180
150
90
60
30
120
0
100 1k 10k 100k 1M 10M 100M
02735-018
A
V
= 100
A
V
= 1
A
V
= 10
V
S
= 5V
Figure 20. Output Impedance vs. Frequency
V
S
= ±1.35V
C
L
= 300pF
R
L
= ∞
A
V
= 1
TIME (4µs/DIV)
VOL
T
AGE (500mV/DIV)
02735-019
0V
Figure 21. Large Signal Transient Response
V
S
= ±2.5V
C
L
= 300pF
R
L
= ∞
A
V
= 1
TIME (5µs/DIV)
VOLTAGE (1V/DIV)
0V
02735-020
Figure 22. Large Signal Transient Response