AD8138
V
C
= 2V p-p
C = 0pF
F
V
V
= 2V p-p
= ؎5V
V
= ؎5V
= 1pF
200V
V
= ؎5V
OUT,dm
= 0pF
OUT,dm
S
F
S
C
F
S
V
OUT,dm
V
= +5V
S
C
= 1pF
F
V
+DIN
400mV
400mV
1V
5ns
5ns
4ns
TPC 19. Large Signal Transient
Response
TPC 20. Large Signal Transient
Response
TPC 21. Settling Time
V
= ؎5V
= 0pF
S
F
C
C
= 10pF
L
C
= 5pF
V
L
OUT,dm
499⍀
C
= 20pF
L
V
= ؎5V
S
499⍀
24.9⍀
24.9⍀
F = 20MHz
= 8V p-p
V
+DIN
49.9⍀
499⍀
C
453⍀
AD8138
L
G = 3(R = 1500)
F
24.9⍀
499⍀
V
+DIN
4V
400mV
30ns
2.5ns
TPC 23. Test Circuit for Cap
Load Drive
TPC 22. Output Overdrive
TPC 24. Large Signal Transient
Response for Various Cap Loads
–20
–30
–20
V
= 2V p-p
V
⌬V
= ؎5V
IN
S
/⌬V
IN,
OUT,dm
cm
499⍀
–30
–40
–50
–60
–70
499⍀
249⍀
249⍀
–40
–50
–60
–70
–80
49.9⍀
499⍀
AD8138
V
= ؎5V
S
24.9⍀
499⍀
V
= +5V
S
1
10
100
1k
1
10
100
1k
FREQUENCY – MHz
FREQUENCY – MHz
TPC 26. Test Circuit for Output
Balance
TPC 25. CMRR vs. Frequency
TPC 27. Output Balance Error
vs. Frequency
REV. E
–7–
ADI [ ADI ]
