AD8138
–60
–60
–70
–80
–90
–60
–70
V
= +3V
V
= +5V
V
= ؎5V
S
S
S
R
= 800⍀
R
= 800⍀
R
= 800⍀
HD3(F = 20MHz)
L
L
L
–70
–80
HD3(F = 20MHz)
HD2(F = 20MHz)
HD2(F = 20MHz)
HD3(F = 20MHz)
HD2(F = 20MHz)
–80
–90
–90
HD2(F = 5MHz)
HD3(F = 5MHz)
HD2(F = 5MHz)
HD2(F = 5MHz)
–100
–100
HD3(F = 5MHz)
–100
–110
HD3(F = 5MHz)
–110
–120
–110
–120
0
1
2
3
4
5
6
0
1
2
3
4
0.25 0.50
0.75 1.00
1.25 1.50
1.75
DIFFERENTIAL OUTPUT VOLTAGE – V p-p
DIFFERENTIAL OUTPUT VOLTAGE – V p-p
DIFFERENTIAL OUTPUT VOLTAGE – V p-p
Figure 11. Harmonic Distortion vs.
Differential Output Voltage
Figure 12. Harmonic Distortion vs.
Differential Output Voltage
Figure 13. Harmonic Distortion vs.
Differential Output Voltage
10
–60
–60
V
V
= ؎5V
F
= 50MHz
C
V
V
= +5V
S
S
= 2V p-p
V
= ؎5V
,dm
= 2V p-p
OUT
S
,dm
OUT
–10
–30
–50
–70
–70
–70
–80
–90
HD2(F = 20MHz)
HD3(F = 20MHz)
HD2(F = 20MHz)
HD3(F = 20MHz)
–80
–90
HD2(F = 5MHz)
HD3(F = 5MHz)
–100
HD2(F = 5MHz)
–100
–110
–90
–110
–120
HD3(F = 5MHz)
–110
49.5
49.7
49.9
50.1
50.3
50.5
200
600
1000
R
1400
– ⍀
1800
200
600
1000
R
1400
– ⍀
1800
FREQUENCY – MHz
LOAD
LOAD
Figure 14. Harmonic Distortion vs.
RLOAD
Figure 15. Harmonic Distortion vs.
RLOAD
Figure 16. Intermodulation
Distortion
45
V
V
= 0.2V p-p
V
= ؎5V
S
OUT,dm
= ؎5V
R
= 800⍀
L
C
= 0pF
F
S
V
OUT,dm
40
C
= 1pF
V
F
OUT–
V
= +5V
S
35
30
25
V
OUT+
V
= ؎5V
S
V
+DIN
1V
5ns
40mV
5ns
0
20
40
60
80
FREQUENCY – MHz
Figure 17. Third Order Intercept vs.
Frequency
Figure 18. Large Signal Transient
Response
Figure 19. Small Signal Transient
Response
–6–
REV. A
ADI [ ADI ]
