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OPA843 Datasheet(PDF) 7 Page - Texas Instruments

Part # OPA843
Description  Dual, Wideband, Low-Noise, Voltage-Feedback Operational Amplifier
PDF  32 Pages
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Manufacturer  TI2 [Texas Instruments]
Direct Link  https://www.ti.com
Logo TI2 - Texas Instruments

OPA843 Datasheet(HTML) 7 Page - Texas Instruments

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OPA2846
SBOS274C −JUNE 2003 − REVISED AUGUST 2008
www.ti.com
7
TYPICAL CHARACTERISTICS: VS = ±5V (continued)
TA = 25°C, G = +10, RF = 453Ω, RG = 50Ω, and RL = 100Ω, unless otherwise noted.
10
1
INPUT VOLTAGE AND CURRENT NOISE
Frequency (Hz)
10
100
1k
10k
100k
1M
10M
100M
Current Noise
2.8pA/
√Hz
Voltage Noise
1.2nV/
√Hz
0.5
0.4
0.3
0.2
0.1
0
−0.1
−0.2
−0.3
−0.4
−0.5
NONINVERTING GAIN FLATNESS TUNE
Frequency (Hz)
1M
10M
100M
1G
NG = 8.0
NG = 8.5
NG = 10.0
NG = 9.5
NG = 9.0
V
O = 200mVPP
A
V =+8
R
F = 453Ω
R
G =64.9Ω
External Compensation
SeeFigure9
100
10
1
RECOMMENDED R
S vs CAPACITIVE LOAD
Capacitive Load (pF)
1
10
100
1000
G= +10V/V
50
45
40
35
30
25
20
2−TONE, 3RD−ORDER INTERMODULATION INTERCEPT
Frequency (MHz)
5
1015
2025
303540
45
50
G = +10V/V
R
F
45 3
Ω
R
S
50
Ω
1/2
O P A 2846
P
IN
P
O
50
Ω
R
L
50
Ω
R
G
50
Ω
+5V
50
Ω Source
− 5V
3
2
1
0
−1
−2
−3
−4
−5
−6
LOW GAIN INVERTING BANDWIDTH
Frequency (Hz)
1M
10M
100M
1G
G=
−6
G=
−4
G=
−2
G=
−1
V
O =200mVPP
R
F =400Ω
External Compensation
SeeFigure5
23
20
17
14
11
8
FREQUENCY RESPONSE vs CAPACITIVE LOAD
Frequency (Hz)
1M
10M
100M
1G
C = 22pF
C = 47pF
C = 100pF
C = 10pF
R
S adjusted for capacitive load.
R
45 3
Ω
R
S
1/ 2
O P A 2 846
V
IN
V
O
50
Ω
R
L
1k
Ω
Power− su pp ly
de c ou plin g no t sh ow n.
C
L
R
G
50
Ω
+5 V
50
Ω Source
−5V
(1 k
Ω is optional.)



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