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OPA27 Datasheet(PDF) 13 Page - Texas Instruments

Part # OPA27
Description  Ultra-Low Noise, Precision OPERATIONAL AMPLIFIERS
PDF  24 Pages
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Manufacturer  TI2 [Texas Instruments]
Direct Link  https://www.ti.com
Logo TI2 - Texas Instruments

OPA27 Datasheet(HTML) 13 Page - Texas Instruments

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OPA27, OPA37
13
SBOS135C
www.ti.com
FIGURE 16. Ultra-Low Noise “N”-Stage Parallel Amplifier.
2k
Ω
Gain = –1010V/V
V
OS ≈ 2µV
Drift
≈ 0.07µV/°C
e
n ≈ 1nV/√Hz at 10Hz
0.9nV/
√Hz at 100Hz
0.87nV/
√Hz at 1kHz
Full Power Bandwidth
≈ 180kHz
Gain Bandwidth
≈ 500MHz
Equivalent Noise Resistance
≈ 50Ω
Signal-to-Noise Ratio
∝ √N
since amplifier noise is
uncorrelated.
2k
Ω
6
2
3
20
Ω
6
2
3
6
2
3
2k
Ω
6
2
3
6
2
3
OPA37
OPA37
OPA37
OPA37
OPA37
6
Output
2
3
OPA37
N = 10 Each OPA37
2k
Ω
2k
Ω
2k
Ω
2k
Ω
2k
Ω
20
Ω
2k
Ω
20
Ω
2k
Ω
20
Ω
2k
Ω
20
Ω
Input



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