OPA2673 Datasheet, PDF (17/40 Pages) Texas Instruments – Dual, Wideband, High Output Current Operational Amplifier with Active Off-Line Control

OPA2673
www.ti.com..................................................................................................................................................... SBOS382A – JUNE 2008 – REVISED OCTOBER 2008
TYPICAL CHARACTERISTICS: V_S = ±6V, 50% Bias
At T_A = +25°C, G = +4V/V, R_F = 402Ω, and R_L = 100Ω, unless otherwise specified.
SMALL-SIGNAL FREQUENCY RESPONSE
6
G = +2V/V
G = +1V/V
3
R_F = 475W
R_F = 511W
0
-3
-6
G = +4V/V
-9
R_F = 402W
-12
-15 V_O = 500mV_PP
-18 ^{RL = 100W}
G = +8V/V
R_F = 250W
10M
100M
1G
Frequency (Hz)
Figure 55.
SMALL-SIGNAL AND
LARGE-SIGNAL PULSE RESPONSES
3
300
2
200
1
0
-1
-2
G = +4V/V
R_L = 100W
-3
Small Signal ±100mV_P
Right Scale
Large Signal ±2.5V_P
Left Scale
Time (10ns/div)
Figure 57.
100
0
-100
-200
-300
0
-0.005
COMPOSITE VIDEO (dG/dφ)
df, Positive Video
-0.010
-0.015
dG, Positive Video
-0.020
-0.025
-0.030
dG, Negative Video
-0.035
-0.040
-0.045
G = +2V/V
R_F = 475W
V_S = ±6V
df, Negative Video
-0.050
1
2
3
4
Number of 150W Loads
Figure 59.
LARGE-SIGNAL FREQUENCY RESPONSE
3
0
-3
V_O = 2V_PP
-6
-9
V_O = 5V_PP
V_O = 1V_PP
-12
V_O = 8V_PP
-15 _{G = +4V/V}
R_L = 100W
-18
0
100 200 300 400 500 600 700
Frequency (MHz)
Figure 56.
OVERDRIVE RECOVERY
8
32
G = +4V/V
6 ^RL ^{= 100W}
24
Input
4
16
2
8
0
0
Output
-2
-8
-4
-16
-6
-24
-8
-32
Time (25ns/div)
Figure 58.
SUPPLY AND OUTPUT CURRENT vs TEMPERATURE
240
15.0
Supply Current
220
14.8
Sourcing Output Current
200
14.6
180
14.4
160
14.2
Sinking Output Current
140
14.0
120
13.8
100
-50 -25
0
25
50
75
Temperature (°C)
Figure 60.
13.6
100 125
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