AD8051/AD8052/AD8054
6.3
6.2
6.1
GAIN FLATNESS – dB
GAIN FLATNESS – dB
6.3
6.2
6.1
6.0
5.9
5.8
5.7
5.6
5.5
5.4
5.3
1
10
FREQUENCY – MHz
100
V
S
= +5V
R
F
= 200
R
L
= 150
G = +2
V
O
= 0.2V p-p
6.0
5.9
5.8
5.7
5.6
5.5
5.4
5.3
0.1
1
10
FREQUENCY – MHz
100
V
S
= +5V
G = +2
R
L
= 150
R
F
= 806
V
O
= 0.2V p-p
Figure 9. AD8051/AD8052 0.1 dB Gain Flatness vs.
Frequency; G = +2
Figure 12. AD8054 0.1 dB Gain Flatness vs. Frequency;
G = +2
9
8
7
6
GAIN – dB
9
V
S
= +5V
V
O
= 2V p-p
8
7
6
GAIN – dB
5
4
3
2
1
0
V
S
AS SHOWN
G = +2
R
L
= 2k
R
F
= 2k
V
O
AS SHOWN
1
V
S
= 5V
V
O
= 4V p-p
V
S
= +5V
V
O
= 2V p-p
5
4
3
2
1
0
–1
0.1
V
S
AS SHOWN
G = +2
R
L
= 2k
R
F
= 2k
V
O
AS SHOWN
1
V
S
= 5V
V
O
= 4V p-p
10
FREQUENCY – MHz
100
500
–1
0.1
10
FREQUENCY – MHz
100
500
Figure 10. AD8051/AD8052 Large Signal Frequency
Response; G = +2
Figure 13. AD8054 Large Signal Frequency Response;
G = +2
80
70
60
V
S
= +5V
R
L
= 2k
80
70
60
OPEN-LOOP GAIN – dB
50
40
30
20
PHASE
10
0
–10
–20
30k
100k
1M
10M
FREQUENCY – Hz
100M
45 PHASE
MARGIN
GAIN
180
135
90
45
0
500M
PHASE MARGIN – Degrees
V
S
= +5V
R
L
= 2k
C
L
= 5pF
OPEN-LOOP GAIN – dB
50
40
30
20
PHASE
10
0
–10
–20
0.01
0.1
1
10
FREQUENCY – MHz
100
50 PHASE
MARGIN
GAIN
–45
–90
–135
–180
500
Figure 11. AD8051/AD8052 Open-Loop Gain and
Phase vs. Frequency
PHASE – Degrees
0
Figure 14. AD8054 Open-Loop Gain and Phase
Margin vs. Frequency
REV. B
–7–
AD [ ANALOG DEVICES ]
