AD9631/AD9632
–30
DIFF GAIN – %
0.10
HARMONIC DISTORTION – dBc
–50
V
O
= 2V p-p
V
S
=
±5V
R
L
= 500Ω
G = +1
0.05
0.00
–0.05
–0.10
1st
2nd
3rd
4th
5th
6th
7th
8th
9th 10th 11th
–70
2ND HARMONIC
–90
DIFF PHASE – Degrees
0.10
0.05
0.00
–0.05
–0.10
1st
2nd
3rd
4th
5th
6th
7th
8th
9th 10th 11th
3RD HARMONIC
–110
–130
10k
100k
1M
FREQUENCY – Hz
10M
100M
Figure 21. AD9631 Harmonic Distortion vs. Frequency,
R
L
= 500
Ω
Figure 24. AD9631 Differential Gain and Phase Error,
G = +2, R
L
= 150
Ω
–30
V
O
= 2V p-p
V
S
=
±5V
R
L
= 100Ω
G = +1
0.3
HARMONIC DISTORTION – dBc
–50
0.2
0.1
2ND HARMONIC
ERROR – %
–70
0
–90
3RD HARMONIC
–110
–0.1
–0.2
–130
10k
100k
1M
FREQUENCY – Hz
10M
100M
–0.3
0
10
20
30
40
50
SETTLING TIME – ns
60
70
80
Figure 22. AD9631 Harmonic Distortion vs. Frequency,
R
L
= 100
Ω
Figure 25. AD9631 Short-Term Settling Time, 2 V Step,
R
L
= 100
Ω
60
55
0.3
0.2
50
INTERCEPT – +dBm
ERROR – %
20
40
FREQUENCY – MHz
60
80
100
45
40
35
30
0.1
0
–0.1
25
20
10
–0.2
0
1
2
3
4
5
6
7
SETTLING TIME – µs
8
9
10
Figure 23. AD9631 Third Order Intercept vs. Frequency
Figure 26. AD9631 Long-Term Settling Time, 2 V Step,
R
L
= 100
Ω
REV. A
–7–
AD [ ANALOG DEVICES ]
