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