TYPICAL PERFORMANCE CURVES: VS = ±5V
G = +2, RF = 402Ω, and RL = 100Ω, unless otherwise noted (see Figure 1).
SMALL-SIGNAL FREQUENCY RESPONSE
LARGE-SIGNAL FREQUENCY RESPONSE
G = +2, RL = 100Ω
2
1
8
7
G = +1, RF = 453Ω
G = +2, RF = 402Ω
0
6
–1
–2
–3
–4
–5
–6
–7
–8
5
2Vp-p
4
3
G = +5, RF = 261Ω
2
1Vp-p
4Vp-p
1
G = +10, RF = 180Ω
7Vp-p
0
–1
–2
0
125MHz
250MHz
0
125MHz
250MHz
Frequency (25MHz/div)
Frequency (25MHz/div)
SMALL-SIGNAL PULSE RESPONSE
LARGE-SIGNAL PULSE RESPONSE
+4
+3
+2
+1
0
400
300
G = +2
O = 0.5Vp-p
G = +2
VO = 5Vp-p
V
200
100
0
–1
–2
–3
–4
–100
–200
–300
–400
Time (5ns/div)
Time (5ns/div)
LARGE-SIGNAL DISABLE/ENABLE RESPONSE
VDIS
DISABLED FEEDTHROUGH vs FREQUENCY
VDIS = 0
6.0
–45
–50
–55
–60
–65
–70
–75
–80
–85
–90
–95
4.0
2.0
0
Output Voltage
2.0
1.6
1.2
0.8
0.4
0
Forward
Reverse
G = +2
IN = +1V
V
Time (50ns/div)
1
10
Frequency (MHz)
100
®
5
OPA681
BB [ BURR-BROWN CORPORATION ]
