AD8551/AD8552/AD8554
SMALL SIGNAL OVERSHOOT – %
V
SY
= 1.35V
C
L
= 50pF
R
L
=
A
V
= +1
50
V
SY
= 2.5V
C
L
= 50pF
R
L
=
A
V
= +1
45
40
35
30
+OS
25
OS
20
15
10
5
0
10
100
1k
CAPACITANCE – pF
10k
V
SY
= 1.35V
R
L
= 2k
T
A
= +25 C
5 s
50mV
5 s
50mV
Figure 19. Small Signal Transient
Response at +2.7 V
Figure 20. Small Signal Transient
Response at +5 V
Figure 21. Small Signal Overshoot
vs. Load Capacitance at +2.7 V
45
SMALL SIGNAL OVERSHOOT – %
40
35
30
25
+OS
20
15
V
OUT
10
5
0
10
100
1k
CAPACITANCE – pF
10k
0V
20 s
BOTTOM SCALE: 1V/DIV
TOP SCALE: 200mV/DIV
1V
20 s
BOTTOM SCALE: 1V/DIV
TOP SCALE: 200mV/DIV
1V
OS
V
OUT
V
SY
= 2.5V
R
L
= 2k
T
A
= +25 C
0V
V
IN
V
SY
= 2.5V
V
IN
= 200mV p-p
(RET TO GND)
C
L
= 0pF
R
L
= 10k
A
V
= 100
V
IN
0V
V
SY
= 2.5V
V
IN
= +200mV p-p
(RET TO GND)
C
L
= 0pF
R
L
= 10k
A
V
= 100
0V
Figure 22. Small Signal Overshoot
vs. Load Capacitance at +5 V
Figure 23. Positive Overvoltage
Recovery
Figure 24. Negative Overvoltage
Recovery
140
V
S
= 2.5V
R
L
= 2k
A
V
= 100
V
IN
= 60mV p-p
140
V
SY
= +2.7V
V
SY
= +5V
120
100
CMRR – dB
80
60
40
20
0
100
120
100
CMRR – dB
80
60
40
200 s
1V
20
0
100
1k
10k
100k
FREQUENCY – Hz
1M
10M
1k
10k
100k
FREQUENCY – Hz
1M
10M
Figure 25. No Phase Reversal
Figure 26. CMRR vs. Frequency
at +2.7 V
Figure 27. CMRR vs. Frequency
at +5 V
REV. 0
–7–
AD [ ANALOG DEVICES ]
