
REV. A
–5–
Typical Performance Characteristics–AD8391
~
RG
RF
VOUT
+VS
–VS
VIN
VMID
0.1 F
6.8 F
RL
CF
+
TPC 1. Single-Ended Test Circuit
CF = 3pF
CF = 0pF
TIME – ns
0.3
OUTPUT
V
O
L
T
A
GE
–
V
0.2
0.1
0
–0.1
–0.2
–0.4
100
75
50
25
0
125
150
175
200
225
250
–0.3
0.4
VS = 6V
G = –2
RL = 10
TPC 2. Small Signal Step Response
TIME – ns
3
OUTPUT
V
O
L
T
A
GE
–
V
2
1
0
–1
–2
–4
100
75
50
25
0
125
150
175
200
225
250
–3
4
VS = 6V
G = –2
RL = 10
CF = 3pF
CF = 0pF
TPC 3. Large Signal Step Response
TIME – ns
0.3
OUTPUT
V
O
L
T
A
GE
–
V
0.2
0.1
0
–0.1
–0.2
–0.4
100
75
50
25
0
125
150
175
200
225
250
–0.3
0.4
VS = 1.5V
G = –2
RL = 10
CF = 3pF
CF = 0pF
TPC 4. Small Signal Step Response
TIME – ns
1.5
OUTPUT
V
O
L
T
A
GE
–
V
1.0
0.5
0
–0.5
–1.0
–2.0
100
75
50
25
0
125
150
175
200
225
250
–1.5
2.0
VS = 1.5V
G = –2
RL = 10
CF = 3pF
CF = 0pF
TPC 5. Large Signal Step Response
TIME – ns
0.01
0
300
50
OUTPUT
ERR
OR
–
V
100
150
200
250
0.008
0.006
0.004
0.002
0
–0.002
–0.004
–0.006
–0.008
–0.01
VS = 6V
G = –2
VIN = 1V p-p
OUTPUT ERROR
TPC 6. 0.1% Settling Time