AD8138
–50
–60
–70
V
OUT, dm
= 2V p-p
R
L
= 800Ω
–60
V
S
= ±5V
R
L
= 800Ω
–70
HD2 (F = 20MHz)
HD2 (V
S
= +5V)
–80
–90
–100
–110
HD3 (V
S
= ±5V)
01073-011
HD3 (F = 20MHz)
DISTORTION (dBc)
HD2 (V
S
= ±5V)
DISTORTION (dBc)
–80
–90
HD2 (F = 5MHz)
–100
HD3 (F = 5MHz)
HD3 (V
S
= +5V)
–110
0
10
20
30
40
50
FUNDAMENTAL FREQUENCY (MHz)
60
70
0
1
2
3
4
5
DIFFERENTIAL OUTPUT VOLTAGE (V p-p)
6
Figure 11. Harmonic Distortion vs. Frequency
–40
–50
–60
Figure 14. Harmonic Distortion vs. Differential Output Voltage
–60
V
S
= 5V
R
L
= 800Ω
–70
HD2 (F = 20MHz)
DISTORTION (dBc)
V
OUT, dm
= 4V p-p
R
L
= 800Ω
HD3 (V
S
= +5V)
DISTORTION (dBc)
–80
HD3 (F = 20MHz)
–90
HD2 (F = 5MHz)
–100
HD3 (F = 5MHz)
–70
–80
–90
–100
–110
0
10
20
30
40
50
FUNDAMENTAL FREQUENCY (MHz)
60
70
HD2 (V
S
= +5V)
HD2 (V
S
= ±5V)
HD3 (V
S
= ±5V)
01073-012
–110
0
1
2
3
DIFFERENTIAL OUTPUT VOLTAGE (V p-p)
4
Figure 12. Harmonic Distortion vs. Frequency
–30
–40
–50
–60
–70
–80
–90
–100
HD3 (V
S
= +5V)
Figure 15. Harmonic Distortion vs. Differential Output Voltage
–60
V
OUT, dm
= 2V p-p
R
L
= 800Ω
F
O
= 20MHz
V
S
= 3V
R
L
= 800Ω
HD3 (F = 20MHz)
HD2 (F = 20MHz)
–70
DISTORTION (dBc)
DISTORTION (dBc)
HD2 (V
S
= +5V)
–80
–90
HD2 (F = 5MHz)
HD3 (V
S
= ±5V)
–100
HD2 (V
S
= ±5V)
HD3 (F = 5MHz)
01073-013
–4
–3
–2
0
1
V
OCM
DC OUTPUT (V)
–1
2
3
4
0.50
0.75
1.00
1.25
1.50
DIFFERENTIAL OUTPUT VOLTAGE (V p-p)
1.75
Figure 13. Harmonic Distortion vs. V
OCM
Figure 16. Harmonic Distortion vs. Differential Output Voltage
Rev. F | Page 10 of 24
01073-016
–110
0.25
01073-015
–120
01073-014
–120
–120
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