Datasheet

OPA691
5
SBOS226D
www.ti.com
TYPICAL CHARACTERISTICS: V
S
= ±5V
G = +2, R
F
= 402Ω, and R
L
= 100Ω, unless otherwise noted (see Figure 1).
+400
+300
+200
+100
0
–100
–200
–300
–400
SMALL-SIGNAL PULSE RESPONSE
Time (5ns/div)
Output Voltage (100mV/div)
G = +2
V
O
= 0.5Vp-p
+4
+3
+2
+1
0
–1
–2
–3
–4
LARGE-SIGNAL PULSE RESPONSE
Time (5ns/div)
Output Voltage (1V/div)
G = +2
V
O
= 5Vp-p
DISABLED FEEDTHROUGH vs FREQUENCY
–45
–50
–55
–60
–65
–70
–75
–80
–85
–90
–95
–100
Frequency (MHz)
10.3 10 100
Feedthrough (5dB/div)
Forward
V
DIS
= 0
Reverse
0.2
0.18
0.16
0.14
0.12
0.1
0.08
0.06
0.04
0.02
0
Number of 150Ω Loads
12
dG
dG
dP
dP
34
COMPOSITE VIDEO dG/dP
dG/dP (%/°)
OPA691
402Ω
+5
–5
402Ω
Video
Loads
Video
In
Optional 1.3kΩ
Pull-Down
No Pull-Down
With 1.3kΩ Pull-Down
7.0
6.5
6.0
5.5
5.0
4.5
4.0
3.5
3.0
2.5
2.0
Frequency (25MHz/div)
0 250MHz125MHz
LARGE-SIGNAL FREQUENCY RESPONSE
Gain (0.5dB/div)
G = +2, R
L
= 100Ω
4Vp-p
7Vp-p
1Vp-p
2Vp-p
1
0
–1
–2
–3
–4
–5
–6
–7
–8
Frequency (25MHz/div)
0 250MHz125MHz
SMALL-SIGNAL FREQUENCY RESPONSE
Normalized Gain (1dB/div)
G = +10, R
F
= 180Ω
G = +5, R
F
= 261Ω
G = +1, R
F
= 453Ω
G = +2,
R
F
= 402Ω
V
O
= 0.5Vp-p