OPA2673 Datasheet, PDF (15/40 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 Differential, 75% Bias
At T_A = +25°C, R_F = 511Ω, R_L = 100Ω Differential, G_DIFF = +4V/V, and G_CM = +1V/V, unless otherwise specified.
SMALL-SIGNAL FREQUENCY RESPONSE
3
G_DIFF = +1V/V
0
-3
-6
G_DIFF = +4V/V
-9 ^GCM ^{= +1V/V}
V_O = 500mV_PP
-12 ^{RL = 100W Differential}
10M
G_DIFF = +8V/V
100M
Frequency (Hz)
Figure 47.
G_DIFF =
+2V/V
1G
SMALL-SIGNAL AND
LARGE-SIGNAL PULSE RESPONSES
5
1.0
4
0.8
Large-Signal ±4V_P
3
Left Scale
0.6
2
0.4
1
0.2
0
0
-1
Small-Signal ±0.5V_P
-0.2
-2
Right Scale
-0.4
-3
-0.6
-4
-0.8
-5
-1.0
Time (10ns/div)
Figure 49.
HARMONIC DISTORTION vs OUTPUT VOLTAGE
-50
G_DIFF = +4V/V
-60
G_CM = +1V/V
R_L = 100W Differential
f = 10MHz
-70
3rd Harmonic
-80
2nd Harmonic
-90
-100
-110
0
2
4
6
8
10
Output Voltage (V_PP)
Figure 51.
LARGE-SIGNAL FREQUENCY RESPONSE
3
0
-3
-6
V_O = 8V_PP
-9
V_O = 16V_PP
-12
G_DIF = +4V/V
-15 G_CM = +1V/V
R_L = 100W Differential
-18
V_O = 4V_PP
0
100 200 300 400 500 600 700
Frequency (MHz)
Figure 48.
HARMONIC DISTORTION vs FREQUENCY
-50
G_DIFF = +4V/V
-60
G_CM = +1V/V
R_L = 100W Differential
-70 ^{VO = 2VPP}
2nd Harmonic
-80
-90
-100
3rd Harmonic
-110
100k
1M
10M
Frequency (Hz)
Figure 50.
100M
HARMONIC DISTORTION vs LOAD RESISTANCE
-60
G_DIFF = +4V/V
-65 _{GCM = +1V/V}
-70 ^VO ^{= 2V}PP
f = 10MHz
-75
-80
-85
3rd Harmonic
-90
2nd Harmonic
-95
-100
-105
10
100
1k
Resistance (W)
Figure 52.
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