Datasheet

OP27 Data Sheet
Rev. H | Page 8 of 21
TYPICAL PERFORMANCE CHARACTERISTICS
100
90
80
70
60
50
40
30
0.01 0.1 1 10
100
FREQUENCY (Hz)
GAIN (dB)
TEST TIME OF 10sec FURTHER
LIMITS LOW FREQUENCY
(<0.1Hz) GAIN
00317-004
Figure 4. 0.1 Hz to 10 Hz p-p Noise Tester Frequency Response
10
9
8
7
6
5
4
3
2
1
1 10 100
1k
FREQUENCY (Hz)
VOLTAGE NOISE (nV/Hz)
I/F CORNER = 2.7Hz
T
A
= 25qC
V
S
= r15V
00317-005
Figure 5. Voltage Noise Density vs. Frequency
INSTRUMENTATION
RANGE TO DC
AUDIO RANGE
TO 20kHz
741
OP27 I/F CORNER
I/F CORNER = 2.7Hz
I/F CORNER
LOW NOISE
AUDIO OP AMP
100
10
1
1 10 100
1k
FREQUENCY (Hz)
VOLTAGE NOISE (nV/Hz)
00317-006
Figure 6. A Comparison of Op Amp Voltage Noise Spectra
10
1
0.1
0.01
100 1k 10k
100k
BANDWIDTH (Hz)
RMS VOLTAGE NOISE (PV)
T
A
= 25qC
V
S
= r15V
00317-007
Figure 7. Input Wideband Voltage Noise vs. Bandwidth (0.1 Hz to Frequency
Indicated)
100
10
1
100 1k
10k
SOURCE RESISTANCE (:)
TOTAL NOISE (nV/Hz)
T
A
= 25qC
V
S
= r15V
R2
R1
R
S
– 2R1
RESISTOR NOISE ONLY
AT 1kHz
AT 10Hz
00317-008
Figure 8. Total Noise vs. Sourced Resistance
5
4
3
2
1
–50 0–25 100755025
125
TEMPERATURE (qC)
VOLTAGE NOISE (nV/Hz)
AT 10Hz
AT 1kHz
V
S
= r15V
00317-009
Figure 9. Voltage Noise Density vs. Temperature