OP27 Datasheet, PDF (8/16 Pages) Analog Devices – Low-Noise, Precision Operational Amplifier

OP27–Typical Performance Characteristics
100
90
80
70
60
50
TEST TIME OF 10sec FURTHER
40
LIMITS LOW FREQUENCY
(<0.1Hz) GAIN
30
0.01
0.1
1
10
100
FREQUENCY – Hz
TPC 1. 0.1 Hz to 10 Hz_p-p Noise Tester
Frequency Response
10
9
8
7
6
5
4
3
2 ^{I/F CORNER = 2.7Hz}
T_A = 25؇C
V_S = ؎15V
1
1
10
100
1k
FREQUENCY – Hz
TPC 2. Voltage Noise Density vs.
Frequency
100
741
I/F CORNER
10 _{I/F CORNER =}
2.7Hz
OP27
LOW NOISE
AUDIO OP AMP
I/F CORNER
INSTRUMENTATION AUDIO RANGE
RANGE TO DC
TO 20kHz
1
1
10
100
1k
FREQUENCY – Hz
TPC 3. A Comparison of Op Amp
Voltage Noise Spectra
10
T_A = 25؇C
V_S = ؎15V
1
0.1
0.01
100
1k
10k
BANDWIDTH – Hz
100k
TPC 4. Input Wideband Voltage
Noise vs. Bandwidth (0.1 Hz to
Frequency Indicated)
100
T_A = 25؇C
V_S = ؎15V
R1
R2
R_S – 2R1
10
AT 10Hz
AT 1kHz
RESISTOR NOISE ONLY
1
100
1k
10k
SOURCE RESISTANCE – ⍀
TPC 5. Total Noise vs. Sourced
Resistance
5
V_S = ؎15V
4
AT 10Hz
3
AT 1kHz
2
1
–50 –25
0 25 50 75 100 125
TEMPERATURE – ؇C
TPC 6. Voltage Noise Density vs.
Temperature
5
T_A = 25؇C
4
3
AT 10Hz
AT 1kHz
2
1
0
10
20
30
40
TOTAL SUPPLY VOLTAGE (V+ – V–) – V
TPC 7. Voltage Noise Density vs.
Supply Voltage
10.0
5.0
1.0
I/F CORNER = 140Hz
0.1
10
100
1k
10k
FREQUENCY – Hz
TPC 8. Current Noise Density vs.
Frequency
4.0
T_A = +125؇C
3.0
T_A = –55؇C
2.0
T_A = +25؇C
1.0
5
15
25
35
45
TOTAL SUPPLY VOLTAGE – V
TPC 9. Supply Current vs. Supply
Voltage
–8–
REV. A