OPA4830 Datasheet, PDF (21/45 Pages) National Semiconductor (TI) – Quad, Low-Power, Single-Supply, Wideband Operational Amplifier

OPA4830
www.ti.com.................................................................................................................................................... SBOS350A – DECEMBER 2006 – REVISED MAY 2008
TYPICAL CHARACTERISTICS: V_S = +3V, Differential Configuration
At T_A = +25°C, R_F = 604Ω, and R_L = 500Ω differential (as shown in Figure 66), unless otherwise noted.
R_D
V_I
R_D
+3V
2kW _1V
G_D
=
604W
R_G
1kW
1/4
0.1mF OPA4830
604W
604W
R_L V_O
1/4
OPA4830
1V
Figure 66.
DIFFERENTIAL LARGE-SIGNAL FREQUENCY RESPONSE
9
6
3
0
-3
-6
G_D = 2
-9
1
V_O = 2V_PP
V_O = 1V_PP
V_O = 200mV_PP
10
Frequency (MHz)
Figure 68.
100 200
DIFFERENTIAL DISTORTION vs FREQUENCY
-35 _{GD = 2}
-45 ^VO ^{= 2V}PP
R_L = 500W
-55
-65
3rd-Harmonic
-75
-85
-95
-105
2nd-Harmonic
-115
0.1
1
10
100
Frequency (MHz)
Figure 70.
DIFFERENTIAL SMALL-SIGNAL FREQUENCY RESPONSE
3
0
-3
-6
-9
-12 _{VO = 200mVPP}
R_L = 500W
-15
1
G_D = 5
G_D = 10
10
Frequency (MHz)
Figure 67.
G_D = 1
G_D = 2
100 200
DIFFERENTIAL DISTORTION vs LOAD RESISTANCE
-40
-45
-50
-55
-60 ^GD ^{= 2}
-65 ^{VO = 4VPP}
f = 5MHz
-70
3rd-Harmonic
-75
-80
2nd-Harmonic
-85
-90
100 150 200 250 300 350 400 450 500
Resistance (W)
Figure 69.
DIFFERENTIAL DISTORTION vs OUTPUT VOLTAGE
-75 _{GD = 2}
R_L = 500W
-80 f = 5MHz
3rd-Harmonic
-85
2nd-Harmonic
-90
-95
-100
0.50 0.75 1.00 1.25 1.50 1.75 2.00
Output Voltage Swing (V_PP)
Figure 71.
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