OPA2830 Datasheet, PDF (21/43 Pages) National Semiconductor (TI) – Dual, Low-Power, Single-Supply, Wideband OPERATIONAL AMPLIFIER

OPA2830
www.ti.com.................................................................................................................................................. SBOS309D – AUGUST 2004 – REVISED AUGUST 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 64), unless otherwise noted.
+3V
2kΩ _1V
1kΩ
1/2
0.1µF OPA2830
R
G
604Ω
V
I
R
G
604Ω
RV
L
O
1/2
OPA2830
1V
Figure 64.
G_D
=
604Ω
R_G
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 66.
100 200
DIFFERENTIAL DISTORTION vs FREQUENCY
−35
G_D = 2
−45 ^VO ^{= 2V}PP
R_L = 500Ω
−55
−65
3rd−Harmonic
−75
−85
−95
−105
2nd−Harmonic
−115
0.1
1
10
100
Frequency (MHz)
Figure 68.
DIFFERENTIAL SMALL-SIGNAL FREQUENCY RESPONSE
3
0
−3
−6
−9
−12 _{VO = 200mVPP}
R_L = 500Ω
−15
1
G_D = 5
G_D = 10
10
Frequency (MHz)
G_D = 1
G_D = 2
100 200
Figure 65.
DIFFERENTIAL DISTORTION vs LOAD RESISTANCE
−40
−45
−50
−55
−60 ^GD ^{= 2}
−65
V_O = 4V_PP
f = 5MHz
−70
3rd−Harmonic
−75
−80
2nd−Harmonic
−85
−90
100 150 200 250 300 350 400 450 500
Resistance (Ω )
Figure 67.
DIFFERENTIAL DISTORTION vs OUTPUT VOLTAGE
−75
G_D = 2
−80 ^{RL = 500Ω}
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 69.
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