Datasheet

ADA4857-1/ADA4857-2 Data Sheet
Rev. C | Page 12 of 20
OUTPUT VOLTAGE (V)
07040-026
TIME (10ns/DIV)
0.25
–0.25
–0.20
0.20
–0.15
0.15
–0.10
0.10
–0.05
0
0.05
C
L
= 10pF
C
L
= 1.5pF
V
S
= ±5V
R
L
= 1kΩ
G = +1
Figure 26. Small Signal Transient Response for Various Capacitive Loads (LFCSP)
OUTPUT VOLTAGE (V)
07040-027
TIME (10ns/DIV)
0.25
–0.25
–0.20
0.20
–0.15
0.15
–0.10
0.10
–0.05
0
0.05
V
S
= ±5V
V
S
= ±2.5V
R
L
= 1kΩ
G = +1
Figure 27. Small Signal Transient Response for Various Supply Voltages (LFCSP)
0.1
1
10
100
1000
1000
0.1 1 10
100
07040-028
FREQUENCY (MHz)
CLOSED-LOOP OUTPUT IMPEDANCE ()
V
S
= ±5V
G = +2
G = +5
Figure 28. Closed-Loop Output Impedance vs. Frequency for Various Gains
OUTPUT VOLTAGE (V)
07040-029
TIME (10ns/DIV)
2.0
–2.0
–1.6
1.6
–1.2
1.2
–0.8
0.8
–0.4
0
0.4
R
L
= 1kΩ
R
L
= 100Ω
V
S
= ±5V
G = +2
Figure 29. Large Signal Transient Response for Various Load Resistances (SOIC)
OUTPUT VOLTAGE (V)
07040-030
TIME (10ns/DIV)
2.0
–2.0
–1.6
1.6
–1.2
1.2
–0.8
0.8
–0.4
0
0.4
R
L
= 1kΩ
R
L
= 100Ω
V
S
= ±5V
G = +1
Figure 30. Large Signal Transient Response for Various Load Resistances (LFCSP)
1 10
100 1000
07040-031
FREQUENCY (MHz)
CLOSED-LOOP INPUT IMPEDANCE (
k
Ω)
V
S
= ±5V
G = +2
0.01
0.1
1
10
100
Figure 31. Closed-Loop Input Impedance vs. Frequency