OP27
TYPICAL PERFORMANCE CHARACTERISTICS
100
10
T
V
= 25°C
= ±15V
A
S
90
80
70
60
1
0.1
50
TEST TIME OF 10sec FURTHER
LIMITS LOW FREQUENCY
(<0.1Hz) GAIN
40
30
0.01
100
0.01
0.1
1
10
100
1k
10k
100k
FREQUENCY (Hz)
BANDWIDTH (Hz)
Figure 4. 0.1 Hz to 10 Hz p-p Noise Tester Frequency Response
Figure 7. Input Wideband Voltage Noise vs. Bandwidth (0.1 Hz to Frequency
Indicated)
100
10
9
8
7
6
R1
R2
T
V
= 25°C
= ±15V
A
T
V
= 25°C
= ±15V
A
S
S
R
– 2R1
S
5
4
10
3
2
AT 10Hz
AT 1kHz
I/F CORNER = 2.7Hz
RESISTOR NOISE ONLY
1k
1
100
1
10k
1
10
100
1k
SOURCE RESISTANCE (Ω)
FREQUENCY (Hz)
Figure 8. Total Noise vs. Sourced Resistance
Figure 5. Voltage Noise Density vs. Frequency
100
5
4
V
= ±15V
S
741
AT 10Hz
AT 1kHz
I/F CORNER
10
3
2
1
LOW NOISE
I/F CORNER = 2.7Hz
AUDIO OP AMP
OP27 I/F CORNER
INSTRUMENTATION
RANGE TO DC
AUDIO RANGE
TO 20kHz
1
1
10
100
1k
–50
–25
0
25
50
75
100
125
FREQUENCY (Hz)
TEMPERATURE (°C)
Figure 6. A Comparison of Op Amp Voltage Noise Spectra
Figure 9. Voltage Noise Density vs. Temperature
Rev. F | Page ± of 20
ADI [ ADI ]
