OP27
5
T
A
= 25°C
60
50
40
OP27C
VOLTAGE NOISE (nV/√Hz)
4
30
OP27A
OFFSET VOLTAGE (μV)
AT 10Hz
20
10
0
–10
–20
–30
–40
–50
–60
TRIMMING WITH
10kΩ POT DOES
NOT CHANGE
TCV
OS
–50
–25
0
25
50
75
100
OP27A
OP27A
3
AT 1kHz
2
125
150
175
TOTAL SUPPLY VOLTAGE, V+ – V–, (V)
TEMPERATURE (°C)
Figure 10. Voltage Noise Density vs. Supply Voltage
10.0
Figure 13. Offset Voltage Drift of Five Representative Units vs. Temperature
6
4
CHANGE IN OFFSET VOLTAGE (μV)
2
0
–2
–4
–6
6
4
2
0
–2
–4
00317-011
CURRENT NOISE (pA/
√
Hz)
1.0
I/F CORNER = 140Hz
0.1
10
100
FREQUENCY (Hz)
1k
10k
0
1
2
3
4
5
6
7
TIME (Months)
Figure 11. Current Noise Density vs. Frequency
5.0
Figure 14. Long-Term Offset Voltage Drift of Six Representative Units
CHANGE IN INPUT OFFSET VOLTAGE (μV)
T
A
= 25°C
V
S
= 15V
10
OP27 C/G
SUPPLY CURRENT (mA)
4.0
T
A
= +125°C
3.0
T
A
= –55°C
2.0
T
A
= +25°C
OP27 F
5
OP27 A/E
00317-012
5
15
25
35
45
0
1
2
3
4
5
TOTAL SUPPLY VOLTAGE (V)
TIME AFTER POWER ON (Min)
Figure 12. Supply Current vs. Supply Voltage
Figure 15. Warm-Up Offset Voltage Drift
Rev. F | Page 9 of 20
00317-015
1.0
1
00317-014
–6
00317-013
0
10
20
30
40
00317-010
1
–70
–75
OP27C
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