AD8138
–60
–70
45
40
35
30
25
R
= 800Ω
L
V
V
= 5V
S
= 2V p-p
OUT, dm
HD2 (F = 20MHz)
HD3 (F = 20MHz)
–80
V
= ±5V
S
–90
V
= +5V
S
HD2 (F = 5MHz)
–100
HD3 (F = 5MHz)
1000
–110
0
20
40
FREQUENCY (MHz)
60
80
200
600
1400
1800
R
(Ω)
LOAD
Figure 17. Harmonic Distortion vs. RLOAD
Figure 20. Third-Order Intercept vs. Frequency
–60
–70
V
= ±5V
S
V
V
= ±5V
S
= 2V p-p
OUT, dm
V
OUT, dm
V
HD2 (F = 20MHz)
HD3 (F = 20MHz)
–80
OUT–
–90
V
OUT+
HD2 (F = 5MHz)
–100
–110
–120
V
+DIN
HD3 (F = 5MHz)
1V
5ns
200
600
1000
1400
1800
R
(Ω)
LOAD
Figure 18. Harmonic Distortion vs. RLOAD
Figure 21. Large Signal Transient Response
10
–10
–30
–50
–70
–90
–110
V
V
= 0.2V p-p
OUT, dm
= ±5V
S
F
V
= 50MHz
= ±5V
C
C
= 0pF
F
S
C
= 1pF
F
40mV
5ns
49.5
49.7
49.9
50.1
50.3
50.5
FREQUENCY (MHz)
Figure 19. Intermodulation Distortion
Figure 22. Small Signal Transient Response
Rev. F | Page 11 of 24
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