OPA2890_08 Datasheet, PDF (15/35 Pages) Texas Instruments – Low-Power, Wideband, Voltage-Feedback OPERATIONAL AMPLIFIER with Disable

OPA2890
www.ti.com.................................................................................................................................................... SBOS364B – DECEMBER 2007 – REVISED MAY 2008
TYPICAL CHARACTERISTICS: V_S = +5V, Differential
At T_A = +25°C, Differential Gain = +2V/V, and R_L = 400Ω, unless otherwise noted. See Figure 58.
DIFFERENTIAL SMALL-SIGNAL FREQUENCY RESPONSE
3
G_D = 1V/V, R_F = 0W
0
G_D = 2V/V
-3
-6
-9
-12
-15 R_F = 750W
R_L = 400W
-18
1
G_D = 10V/V
G_D = 5V/V
10
100
300
Frequency (MHz)
Figure 43.
DIFFERENTIAL DISTORTION vs LOAD RESISTANCE
-60
2nd Harmonic
-65
-70
-75
3rd Harmonic
-80
V_O = 4V_PP
f = 1MHz
G_D = 2V/V
-85
100
1k
Resistance (W)
Figure 45.
DIFFERENTIAL DISTORTION vs OUTPUT VOLTAGE
-60
R_L = 400W
f = 1MHz
G_D = 2V/V
2nd Harmonic
-70
DIFFERENTIAL LARGE-SIGNAL FREQUENCY RESPONSE
9
V_O = 4V_PP
6
3
V_O = 1V_PP
0
-3
-6 ^RF ^{= 750W}
R_L = 400W
-9 ^{GD = +2V/V}
1
10
Frequency (MHz)
Figure 44.
100 200
DIFFERENTIAL DISTORTION vs FREQUENCY
-30
V_O = 4V_PP
-40 ^RL ^{= 400W}
G_D = 2V/V
-50
-60
2nd Harmonic
-70
3rd Harmonic
-80
-90
-100
0.1
1
Frequency (MHz)
Figure 46.
10 20
DIFFERENTIAL DISTORTION vs FREQUENCY
-80
R_{L_DIFF} = 1kW
-85 ^{GD = 1V/V}
V_O = 4V_PP
3rd Harmonic
-90
-100
-80
-90
0.1
3rd Harmonic
1
10
Output Voltage (V_PP)
Figure 47.
-110
2nd Harmonic
-120
Shift Phase 180° of Input Signal
-130
1
10
100
Frequency (Hz)
Figure 48.
1000
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