OPA2890 Datasheet, PDF (9/38 Pages) Texas Instruments – Low-Power, Wideband, Voltage-Feedback OPERATIONAL AMPLIFIER with Disable

OPA2890
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SBOS364C – DECEMBER 2007 – REVISED DECEMBER 2009
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.
LOW-FREQUENCY INVERTING HARMONIC DISTORTION
TWO-TONE, 3RD-ORDER INTERMODULATION SPURIOUS
-90
V_O = 2V_PP
R_L = 500W
-95 _{G = -1V/V}
-30
Load power at matched 50W load.
-40
10MHz
-50
-100
-105
-110
-115
1k
2nd Harmonic
3rd Harmonic
10k
100k
Frequency (Hz)
-60
5MHz
-70
-80
-90
-100
1MHz
-110
1M
-8 -6 -4 -2 0
2
4
6
8
Single-Tone Load Power (dBm)
Figure 13.
Figure 14.
RECOMMENDED R_S vs CAPACITIVE LOAD
100
10
1
1
10
100
1000
Capacitive Load (pF)
Figure 15.
FREQUENCY RESPONSE vs CAPACITIVE LOAD
9
G = +2V/V
6
C_L = 10pF
3
0
-3
-6
C_L = 47pF
C_L = 100pF
VIN
1/2
OPA2890
750W
RS
CL
VOUT
1kW⁽¹⁾
750W
NOTE: (1) 1kW is optional.
C_L = 22pF
-9
0 20 40 60 80 100 120 140 160 180 200
Frequency (MHz)
Figure 16.
COMMON-MODE REJECTION RATIO AND POWER-SUPPLY
REJECTION RATIO vs FREQUENCY
80
-PSRR
70
60
50
+PSRR
CMRR
40
30
20
10
0
1k
10k
100k
1M
10M
100M
Frequency (Hz)
Figure 17.
INPUT VOLTAGE AND CURRENT NOISE
100
10
Voltage Noise (8nV/ÖHz)
Current Noise (1pA/ÖHz)
1
0.1
100
1k
10k
100k
1M
10M 100M
Frequency (Hz)
Figure 18.
Copyright © 2007–2009, Texas Instruments Incorporated
Product Folder Link(s): OPA2890
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