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