OPA3681 Datasheet, PDF (9/21 Pages) Burr-Brown (TI) – Triple Wideband, Current-Feedback OPERATIONAL AMPLIFIER With Disable

TYPICAL PERFORMANCE CURVES: V_S = +5V
G = +2, R_F = 499Ω, and R_L = 100Ω, unless otherwise noted (see Figure 1).
SMALL-SIGNAL FREQUENCY RESPONSE
2
1 ^{VO = 0.5Vp-p}
0
G = +2,
R_F = 499Ω _{G = +1,}
–1
R_F = 549Ω
–2
–3
G = +5,
–4
R_F = 365Ω
–5
G = +10,
–6
R_F = 182Ω
–7
–8
0
125
250
Frequency (25MHz/div)
LARGE-SIGNAL FREQUENCY RESPONSE
8
G = +2
7 _{RL = 100Ω to 2.5V}
V_O = 0.5Vp-p
6
5
V_O = 1Vp-p
4
V_O = 2Vp-p
3
2
1
0
–1
–2
0
125
250
Frequency (25MHz/div)
SMALL-SIGNAL PULSE RESPONSE
2.10
2.9
G = +2
V_O = 0.5Vp-p
2.8
2.7
2.6
2.5
2.4
2.3
2.2
2.1
2.0
Time (5ns/div)
LARGE-SIGNAL PULSE RESPONSE
4.5
4.1
G = +2
V_O = 2Vp-p
3.7
3.3
2.9
2.5
2.1
1.7
1.3
0.9
0.5
Time (5ns/div)
70
60
50
40
30
20
10
0
1
RECOMMENDED R_S vs CAPACITIVE LOAD
10
100
Capacitive Load (pF)
15
12
9
6
3
0
V_I
–3
–6
–9
–12
–15
0
FREQUENCY RESPONSE vs CAPACITIVE LOAD
C_L = 47pF
C_L = 10pF
C_L = 22pF
+5V
0.1µF ^806Ω
57.6Ω 806Ω
499Ω
499Ω
0.1µF
0.1µF
R_{S CL}
V_O
1kΩ
C_L = 100pF
100MHz
Frequency (20MHz/div)
200MHz
®
9
OPA3681