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OP227EY Datasheet(PDF) 6 Page - Analog Devices

Part # OP227EY
Description  Dual, Low Noise, Low Offset Instrumentation Operational Amplifier
PDF  16 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

OP227EY Datasheet(HTML) 6 Page - Analog Devices

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REV. A
OP227
–6–
FREQUENCY – Hz
1
1
10
100
1k
2
3
4
5
6
7
8
9
10
TA = 25 C
l/f CORNER
= 2.7Hz
VS = 15V
TPC 3. Voltage Noise Density vs.
Frequency
SOURCE RESISTANCE –
100
100
10
1
1k
10k
RESISTOR NOISE ONLY
TA = 25 C
VS = 15V
AT 10Hz
AT 1kHZ
R1
R2
RS = 2R1
TPC 6. Total Noise vs. Source
Resistance
FREQUENCY – Hz
100
1
10
10
10
100
1k
741
l/f CORNER
LOW NOISE
AUDIO
OP AMP
l/f CORNER
OP227
l/f CORNER
2.7 Hz
INSTRUMENTATION
RANGE,TO DC
AUDIO RANGE
TO 20 kHz
TPC 4. Comparison of Op Amp Voltage
Noise Spectra
TEMPERATURE – C
5
–50
4
3
2
1
–25
0
25
50
75
100
125
AT 10Hz
AT 1kHz
VS = 15V
TPC 7. Voltage Noise Density vs.
Temperature
BANDWIDTH – Hz
10
100
1
0.1
0.01
1k
10k
100k
TA = 25 C
VS = 15V
TPC 5. Input Wideband Noise vs. Band-
width (0.1 Hz to Frequency Indicated)
FREQUENCY – Hz
10.0
10
1.0
0.1
100
1k
10k
l/f CORNER
= 140Hz
TPC 8. Current Noise Density vs.
Frequency
10
0%
100
90
1 SEC / DIV
0.1Hz TO 10Hz PEAK-TO-PEAK NOISE

0
40
80
120
–40
–80
–120
TPC 2. Low Frequency Noise
(Observation Must Be Limited to 10
Seconds to Ensure 0.1 Hz Cutoff)
10
0.1 F
100k
D.U.T.
VOLTAGE GAIN
= 50,000
2k
5 F
OP12
24.3k
0.1 F
100k
4.3k
2.35 F
23.5 F
SCOPE
X 1
RIN = 1M
110k
BACK-TO-BACK
10 F
BACK-TO-BACK
4.7 F
BACK-TO-BACK
47 F
TPC 1. Voltage Noise Test Circuit
(0.1 Hz to 10 Hz p-p)
–Typical Performance Characteristics



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