Datasheet

ADA4938-1/ADA4938-2
Rev. A | Page 12 of 28
1 10 100
–
40
–120
–110
–100
–90
–80
–70
–60
–50
DISTORTION (dBc)
FREQUENCY (MHz)
HD2, V
S
= +5V
HD3, V
S
= +5V
HD2, V
S
= ±5V
HD3, V
S
= ±5V
06592-123
Figure 25. Harmonic Distortion vs. Frequency and Supply Voltage
1 10 100
–
40
–130
–120
–100
–110
–90
–80
–70
–60
–50
DISTORTION (dBc)
FREQUENCY (MHz)
HD2, G = +1
HD3, G = +1
HD2, G = +2
HD3, G = +2
HD2, G = +5
HD3, G = +5
06592-124
Figure 26. Harmonic Distortion vs. Frequency and Gain
–3.3 –2.7 –2.1 –1.5 –0.9 –0.3 0.3 0.9 1.5 2.1 2.7 3.3
–
40
–130
–120
–110
–100
–90
–80
–70
–60
–50
DISTORTION (dBc)
V
OCM
(V)
HD2, 10MHz
HD3, 10MHz
HD2, 70MHz
HD3, 70MHz
06592-128
Figure 27. Harmonic Distortion vs. V
OCM
and Frequency
0987654312
–
40
–120
–110
–100
–90
–80
–70
–60
–50
DISTORTION (dBc)
V
OUT, dm
(V)
HD2, +5V
HD3, +5V
HD2, ±5V
HD3, ±5V
06592-126
Figure 28. Harmonic Distortion vs. V
OUT
and Supply Voltage
1 10 100
–
40
–120
–110
–100
–90
–80
–70
–60
–50
DISTORTION (dBc)
FREQUENCY (MHz)
HD2, R
L
= 1kΩ
HD3, R
L
= 1kΩ
HD2, R
L
= 200Ω
HD3, R
L
= 200Ω
HD2, R
L
= 100Ω
HD3, R
L
= 100Ω
06592-127
Figure 29. Harmonic Distortion vs. Frequency for Various Loads
1.7 3.33.12.92.72.52.32.11.9
–
40
–120
–110
–100
–90
–80
–70
–60
–50
DISTORTION (dBc)
V
OCM
(V)
06592-125
HD2, 10MHz
HD3, 10MHz
HD2, 70MHz
HD3, 70MHz
Figure 30. Harmonic Distortion vs. V
OCM
and Frequency, V
S
= 5 V