OPA2890_08 Datasheet, PDF (13/35 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
At T_A = +25°C, G = +2V/V, R_F = 750Ω, and R_L = 200Ω, unless otherwise noted. See Figure 49.
NONINVERTING
SMALL-SIGNAL FREQUENCY RESPONSE
3
G = +1V/V
0
R_F = 0W
-3
-6
G = +10V/V
-9
-12
-15
V_O = 500mV_PP
-18
G = +5V/V
G = +2V/V
1
10
100
500
Frequency (MHz)
Figure 32.
SMALL-SIGNAL PULSE RESPONSE
2.9
V_O = 0.5V_PP
2.8 G = +2V/V
2.7
2.6
2.5
2.4
2.3
2.2
2.1
Time (10ns/div)
Figure 34.
RECOMMENDED R_S vs CAPACITIVE LOAD
100
10
1
1
10
100
1000
Capacitive Load (pF)
Figure 36.
NONINVERTING
LARGE-SIGNAL FREQUENCY RESPONSE
9
R_L = 200W
G = +2V/V
6
1V_PP
3
2V_PP
0
-3
-6
-9
1
10
Frequency (MHz)
Figure 33.
3V_PP
100
300
LARGE-SIGNAL PULSE RESPONSE
4.1
V_O = 2V_PP
3.7 G = +2V/V
3.3
2.9
2.5
2.1
1.7
1.3
0.9
Time (10ns/div)
Figure 35.
FREQUENCY RESPONSE vs CAPACITIVE LOAD
9
C_L = 10pF
6
3
C_L = 100pF
0
C_L = 22pF
-3
C_L = 47pF
-6
-9
-12
VIN
1/2
OPA2890
750W
RS
CL
VOUT
1kW⁽¹⁾
750W
NOTE: (1) 1kW is optional.
-15
0 20 40 60 80 100 120 140 160 180 200
Frequency (MHz)
Figure 37.
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