OPA2890 Datasheet, PDF (12/38 Pages) Texas Instruments – Low-Power, Wideband, Voltage-Feedback OPERATIONAL AMPLIFIER with Disable

OPA2890
SBOS364C – DECEMBER 2007 – REVISED DECEMBER 2009
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TYPICAL CHARACTERISTICS: V_S = ±5V, Differential
At T_A = +25°C, Differential Gain = +2V/V, and R_L = 400Ω, unless otherwise noted. See Figure 52.
DIFFERENTIAL SMALL-SIGNAL FREQUENCY RESPONSE
DIFFERENTIAL LARGE-SIGNAL FREQUENCY RESPONSE
3
9
G_D = 1V/V
0
6
G_D = 2V/V
-3
3
V_O = 5V_PP
-6
-9
-12
-15 R_F = 750W
R_L = 400W
-18
1M
G_D = 10V/V
G_D = 5V/V
10M
Frequency (Hz)
Figure 26.
100M
400M
0
-3
-6
-9 R_L = 400W
G_D = 2V/V
-12
1
V_O = 8V_PP
V_O = 14V_PP
10
Frequency (MHz)
Figure 27.
100 200
DIFFERENTIAL DISTORTION vs LOAD RESISTANCE
-60
2nd Harmonic
-65
-70
-75
-80
3rd Harmonic
-85
V_O = 4V_PP
f = 1MHz
G_D = 2V/V
-90
100
1k
Resistance (W)
Figure 28.
DIFFERENTIAL DISTORTION vs FREQUENCY
-30
V_O = 4V_PP
-40 _{RL = 400W}
G_D = 2V/V
-50
-60
2nd Harmonic
-70
-80
3rd Harmonic
-90
-100
1
10
20
Frequency (MHz)
Figure 29.
DIFFERENTIAL DISTORTION vs OUTPUT VOLTAGE
-65
-70
R_L = 400W
-75 f = 1MHz
G_D = 2V/V
-80
2nd Harmonic
-85
-90
1
3rd Harmonic
10
Output Voltage (V_PP)
Figure 30.
DIFFERENTIAL DISTORTION vs FREQUENCY
-90
-100
R_{L_DIFF} = 1kW
G_D = -1V/V
V_O = 4V_PP
-110
3rd Harmonic
-120
-130
-140
2nd Harmonic
-150
1k
10k
100k
1M
Frequency (Hz)
Figure 31.
12
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