AD8138
TYPICAL PERFORMANCE CHARACTERISTICS
Unless otherwise noted, Gain = 1, RG = RF = RL, dm = 499 V, TA = 25°C; refer to Figure 39 for test setup.
6
6
V
C
= 2V p-p
V
C
= 0.2V p-p
= 0pF
IN
= 0pF
IN
F
F
3
3
V
= +5V
S
V
= +5V
S
0
0
V
= ±5V
S
V
= ±5V
S
–3
–6
–9
–3
–6
–9
1
1
1
10
100
1000
1
10
100
1000
FREQUENCY (MHz)
FREQUENCY (MHz)
Figure 5. Small Signal Frequency Response
Figure 8. Large Signal Frequency Response
6
3
6
3
V
V
= ±5V
V
V
= 2V p-p
= ±5V
S
IN
S
= 0.2V p-p
IN
C
= 0pF
F
C
= 0pF
F
0
0
C
= 1pF
F
C
= 1pF
F
–3
–6
–9
–3
–6
–9
10
100
1000
1
10
100
1000
FREQUENCY (MHz)
FREQUENCY (MHz)
Figure 6. Small Signal Frequency Response
Figure 9. Large Signal Frequency Response
0.5
0.3
30
20
10
V
C
V
R
= ±5V
= 0pF
S
V
V
= ±5V
S
F
= 0.2V p-p
IN
= 0.2V p-p
OUT, dm
= 499Ω
G
G = 10, R = 4.99kΩ
F
C
F
= 0pF
G = 5, R = 2.49kΩ
F
0.1
G = 2, R = 1kΩ
F
–0.1
–0.3
–0.5
C
F
= 1pF
G = 1, R = 499Ω
F
0
–10
1
10
FREQUENCY (MHz)
100
10
100
1000
FREQUENCY (MHz)
Figure 7. 0.1 dB Flatness vs. Frequency
Figure 10. Small Signal Frequency Response for Various Gains
Rev. F | Page 9 of 24
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