OPA2890 Datasheet, PDF (14/38 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 (continued)
At T_A = +25°C, G = +2V/V, R_F = 750Ω, and R_L = 200Ω, unless otherwise noted. See Figure 49.
NONINVERTING OVERDRIVE RECOVERY
HARMONIC DISTORTION vs LOAD RESISTANCE
6.5
4.5
-70
5.5
4.0
V_O = 2V_PP
f = 1MHz
4.5
-75
3.5
2nd Harmonic
G = +2V/V
3.5
Output Voltage
Left Scale
2.5
1.5
0.5
-0.5
3.0
2.5
Input Voltage
Right Scale
2.0
1.5
1.0
-80
-85
3rd Harmonic
-90
-1.5
0.5
-95
Time (10ns/div)
100
1k
Resistance (W)
Figure 38.
Figure 39.
HARMONIC DISTORTION vs FREQUENCY
-50
V_O = 2V_PP
R_L = 200W to V_S/2
-60 G = +2V/V
-70
HARMONIC DISTORTION vs OUTPUT VOLTAGE
-75
R_L = 200W to V_S/2
f = 1MHz
G = +2V/V
-80
2nd Harmonic
-80
2nd Harmonic
-90
-100
0.1
3rd Harmonic
1
Frequency (MHz)
Figure 40.
-85
-90
10
0.1
3rd Harmonic
1
10
Output Voltage Swing (V_PP)
Figure 41.
TWO-TONE, 3RD-ORDER INTERMODULATION SPURIOUS
-30
Load Power at Matched 50W Load
-40
10MHz
-50
-60
5MHz
-70
-80
1MHz
-90
-100
-8 -7 -6 -5 -4 -3 -2 -1 0 1 2
Single-Tone Load Power (dB)
Figure 42.
14
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