Datasheet

AD8139
Rev. B | Page 12 of 24
–
30
–130
–120
–110
–100
–90
–80
–70
–60
–50
–40
0.1 1 10 100
FREQUENCY (MHz)
DISTORTION (dBc)
V
O, dm
= 2.0V p-p
R
F
= 200Ω
R
F
= 500Ω
R
F
= 1kΩ
0
4679-021
Figure 25. Second Harmonic Distortion vs. Frequency and R
F
–
80
–90
–100
–110
–120
–130
–140
–150
012345678
V
O, dm
(V p-p)
DISTORTION (dBc)
F
C
= 2MHz
V
S
= +5V
V
S
= ±5V
0
4679-022
Figure 26. Second Harmonic Distortion vs. Output Amplitude
–
60
–130
–100
–120
–110
–90
–80
–70
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
V
OCM
(V)
DISTORTION (dBc)
V
O, dm
= 2V p-p
F
C
= 2MHz
SECOND HARMONIC
THIRD HARMONIC
0
4679-023
Figure 27. Harmonic Distortion vs. V
OCM
, V
S
= +5 V
–
30
–130
–120
–110
–100
–90
–80
–70
–60
–50
–40
0.1 1 10 100
FREQUENCY (MHz)
DISTORTION (dBc)
V
O, dm
= 2.0V p-p
R
F
= 200Ω
R
F
= 1kΩ
R
F
= 500Ω
0
4679-024
Figure 28. Third Harmonic Distortion vs. Frequency and R
F
–
80
–90
–100
–110
–120
–130
–140
–150
087654321
V
O, dm
(V p-p)
DISTORTION (dBc)
F
C
= 2MHz
V
S
= +5V
V
S
= ±5V
0
4679-025
Figure 29. Third Harmonic Distortion vs. Output Amplitude
–
60
–130
–100
–120
–110
–90
–80
–70
–5 –4 –3 –2 –1 0 1 2 3 4 5
04679-026
V
OCM
(V)
DISTORTION (dBc)
V
O, dm
= 2V p-p
F
C
= 2MHz
SECOND HARMONIC
THIRD HARMONIC
Figure 30. Harmonic Distortion vs. V
OCM
, V
S
= ±5 V