op227e Analog Devices, Inc., op227e Datasheet - Page 6

• Manufacturer Part Number: op227e
• Description: Dual, Low Noise, Low Offset Instrumentation Operational Amplifier
• Manufacturer: Analog Devices, Inc.

OP227
TPC 3. Voltage Noise Density vs.
Frequency
100
10
10
TPC 6. Total Noise vs. Source
Resistance
9
8
7
6
5
4
3
2
1
1
100
1
l/f CORNER
AT 1kHZ
AT 10Hz
T
V
A
S
= 2.7Hz
= 25 C
=
–Typical Performance Characteristics
15V
SOURCE RESISTANCE –
RESISTOR NOISE ONLY
FREQUENCY – Hz
10
TPC 1. Voltage Noise Test Circuit
(0.1 Hz to 10 Hz p-p)
10
1k
VOLTAGE GAIN
D.U.T.
R1
R2
100k
R
= 50,000
0.1 F
100
BACK-TO-BACK
S
T
V
= 2R1
A
S
= 25 C
=
10 F
15V
5 F
2k
10k
1k
24.3k
OP12
TPC 4. Comparison of Op Amp Voltage
Noise Spectra
100k
0.1 F
TPC 7. Voltage Noise Density vs.
Temperature
BACK-TO-BACK
100
10
10
5
4
3
2
1
–50
1
4.7 F
BACK-TO-BACK
4.3k
INSTRUMENTATION
l/f CORNER
2.7 Hz
2.35 F
–25
47 F
RANGE, TO DC
TEMPERATURE – C
0
OP227
23.5 F
741
FREQUENCY – Hz
10
AT 10Hz
AT 1kHz
l/f CORNER
– 6 –
25
110k
R
SCOPE
IN
LOW NOISE
AUDIO
OP AMP
50
X 1
= 1M
AUDIO RANGE
TO 20 kHz
100
75
l/f CORNER
V
S
=
100
TPC 2. Low Frequency Noise
(Observation Must Be Limited to 10
Seconds to Ensure 0.1 Hz Cutoff)
15V
–120
120
–40
–80
80
40
125
1k
0
100
0%
90
10
0.1Hz TO 10Hz PEAK-TO-PEAK NOISE
1 SEC / DIV
TPC 5. Input Wideband Noise vs. Band-
width (0.1 Hz to Frequency Indicated)
10.0
0.01
TPC 8. Current Noise Density vs.
Frequency
1.0
0.1
0.1
10
1
100
10
l/f CORNER
= 140Hz
100
FREQUENCY – Hz
BANDWIDTH – Hz
1k
10k
1k
T
V
A
S
= 25 C
=
REV. A
15V
100k
10k