AD9631/AD9632
AD9631–Typical Characteristics
1
0
–1
–2
GAIN – dB
R
F
200Ω
V
S
=
±5V
R
L
= 100Ω
V
O
= 300mV p-p
R
F
50Ω
R
F
450
V
S
=
±5V
R
L
= 100Ω
GAIN = +1
400
–3dB BANDWIDTH – MHz
R
F
150Ω
R
F
100Ω
130Ω
AD9631
R
L
–3
–4
–5
–6
–7
–8
–9
1M
N PACKAGE
350
300
R PACKAGE
250
10M
100M
1G
20
40
60
80
100
120
140
160 180
200
220
240
FREQUENCY – Hz
VALUE OF FEEDBACK RESISTOR (R
F
) –
Ω
Figure 15. AD9631 Small Signal Frequency Response
G = +1
Figure 18. AD9631 Small Signal –3 dB Bandwidth vs. R
F
0.1
0
–0.1
–0.2
GAIN – dB
1
0
R
F
250Ω
–0.3
–0.4
–0.5
–0.6
–0.7
–0.8
–0.9
1M
R
F
120Ω
OUTPUT – dB
V
S
=
±5V
R
L
= 100Ω
G = +1
Vo = 300mV p-p
R
F
100Ω
R
F
150Ω
R
F
140Ω
–1
–2
–3
–4
–5
–6
–7
–8
–9
1M
V
S
=
±5V
V
O
= 4V p-p
R
L
= 100Ω
R
F
= 50Ω
TO
250Ω BY 50Ω
10M
FREQUENCY – Hz
100M
500M
10M
FREQUENCY – Hz
100M
500M
Figure 16. AD9631 0.1 dB Flatness, N Package (for R
Package Add 20
Ω
to R
F
)
Figure 19. AD9631 Large Signal Frequency Response,
G = +1
90
80
70
PHASE
60
50
GAIN – dB
40
30
20
10
0
–10
–20
10k
100k
1M
10M
100M
GAIN
100
80
60
PHASE MARGIN – Degrees
40
20
0
–20
–40
–60
–80
–100
–120
1G
1
0
–1
–2
GAIN – dB
–3
–4
–5
–6
–7
–8
–9
1M
V
S
=
±5V
R
L
= 100Ω
V
O
= 300mV p-p
R
F
267Ω
FREQUENCY – Hz
10M
100M
FREQUENCY – Hz
1G
Figure 17. AD9631 Open-Loop Gain and Phase Margin vs.
Frequency, R
L
= 100
Ω
Figure 20. AD9631 Small Signal Frequency Response,
G = –1
REV. A
–6–
AD [ ANALOG DEVICES ]
