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OPA846 Datasheet(PDF) 6 Page - Texas Instruments

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Part # OPA846
Description  Wideband, Low-Noise, Voltage-Feedback OPERATIONAL AMPLIFIER
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

OPA846 Datasheet(HTML) 6 Page - Texas Instruments

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OPA846
6
SBOS250E
www.ti.com
TYPICAL CHARACTERISTICS: VS = ±5V (Cont.)
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
2.8pA/
√Hz
Current Noise
1.2nV/
√Hz
Voltage Noise
50
45
40
35
30
25
20
2-TONE, 3RD-ORDER INTERMODULATION INTERCEPT
Frequency (MHz)
510
15
20
25
30
35
40
45
50
G = +10V/V
R
F
453
Ω
R
S
50
Ω
OPA846
P
IN
P
O
50
Ω
R
L
50
Ω
R
G
50
Ω
+5V
50
Ω Source
–5V
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 (MHz)
1
10
100
1000
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
See Figure 9
3
2
1
0
–1
–2
–3
–4
–5
–6
LOW GAIN INVERTING BANDWIDTH
Frequency (MHz)
1
10
100
1000
G = –6
G = –4
G = –2
G = –1
V
O = 200mVPP
R
F = 400Ω
External Compensation
See Figure 5
100
10
1
RECOMMENDED R
S vs CAPACITIVE LOAD
Capacitive Load (pF)
1
10
100
1000
G = +10V/V
23
20
17
14
11
8
FREQUENCY RESPONSE vs CAPACITIVE LOAD
Frequency (MHz)
1
10
100
1000
C = 22pF
C = 47pF
C = 100pF
C = 10pF
R
S adjusted for capacitive load.
R
453
Ω
R
S
OPA846
V
IN
V
O
50
Ω
R
L
1k
Ω
Power-supply
decoupling not shown.
C
L
R
G
50
Ω
+5V
50
Ω Source
–5V
(1k
Ω is optional.)


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