OPA2673 Datasheet, PDF (12/40 Pages) Texas Instruments – Dual, Wideband, High Output Current Operational Amplifier with Active Off-Line Control

OPA2673
SBOS382A – JUNE 2008 – REVISED OCTOBER 2008..................................................................................................................................................... www.ti.com
TYPICAL CHARACTERISTICS: V_S = ±6V, 75% Bias
At T_A = +25°C, G = +4V/V, R_F = 402Ω, and R_L = 100Ω, unless otherwise specified.
SMALL-SIGNAL FREQUENCY RESPONSE
3
0
G = +1V/V
-3
R_F = 511W
G = +2V/V
-6
R_F = 475W
-9
G = +4V/V
R_F = 402W
-12
-15 _{VO = 500mVPP}
-18 ^{RL = 100W}
10M
G = +8V/V
R_F = 250W
100M
1G
Frequency (Hz)
Figure 34.
SMALL-SIGNAL AND
LARGE-SIGNAL PULSE RESPONSES
3
300
2
200
1
100
0
Small Signal ±100mV_P
Right Scale
0
-1
-2
G = +4V/V
R_L = 100W
-3
Large Signal ±2.5V_P
Left Scale
Time (10ns/div)
Figure 36.
-100
-200
-300
0
-0.005
COMPOSITE VIDEO (dG/dφ)
df, Positive Video
-0.010
-0.015
-0.020
dG, Negative Video
dG, Positive Video
-0.025
-0.030
-0.035 ^{G = +2V/V}
-0.040
R_F = 475W
V_S = ±6V
-0.045
1
df, Negative Video
2
3
4
Number of 150W Loads
Figure 38.
LARGE-SIGNAL FREQUENCY RESPONSE
3
0
-3
V_O = 1V_PP
-6
V_O = 8V_PP
-9
V_O = 5V_PP
-12
V_O = 2V_PP
-15 _{G = +4V/V}
R_L = 100W
-18
0 100 200 300 400 500 600 700 800 900
Frequency (MHz)
Figure 35.
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 37.
SUPPLY AND OUTPUT CURRENT vs TEMPERATURE
500
Sourcing Output Current
480
24.50
Supply Current
24.25
460
24.00
440
23.75
420
23.50
400
Sinking Output Current
23.25
380
23.00
360
22.75
340
22.50
320
22.25
300
-50 -25
0
22.00
25
50
75 100 125
Temperature (°C)
Figure 39.
12
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