Datasheet

Data Sheet OP27
Rev. H | Page 9 of 21
5
4
3
2
1
0
40
TOTAL SUPPLY VOLTAGE, V+ – V–, (V)
VOLTAGE NOISE (nV/Hz)
T
A
= 25qC
10 20 30
AT 10Hz
AT 1kHz
00317-010
Figure 10. Voltage Noise Density vs. Supply Voltage
10.0
0.1
10
10k
FREQUENCY (Hz)
CURRENT NOISE (pA/Hz)
I/F CORNER = 140Hz
1.0
100 1k
00317-011
Figure 11. Current Noise Density vs. Frequency
5.0
1.0
5
45
TOTAL SUPPLY VOLTAGE (V)
SUPPLY CURRENT (mA)
T
A
= –55qC
T
A
= +125qC
4.0
3.0
2.0
15 25 35
T
A
= +25qC
00317-012
Figure 12. Supply Current vs. Supply Voltage
60
–70
–75
175
TEMPERATURE (qC)
OFFSET VOLTAGE (PV)
50
40
30
20
10
0
–10
–20
–30
–40
–50
–60
–50 –25 0 25 50 75 100 125 150
OP27C
OP27C
OP27A
OP27A
OP27A
TRIMMING WITH
10k: POT DOES
NOT CHANGE
TCV
OS
00317-013
Figure 13. Offset Voltage Drift of Five Representative Units vs. Temperature
6
–6
0
7
TIME (Months)
CHANGE IN OFFSET VOLTAGE (PV)
4
2
0
–2
–4
–6
6
4
2
0
–2
–4
1 2 3 4 5 6
00317-014
Figure 14. Long-Term Offset Voltage Drift of Six Representative Units
1
0
5
TIME AFTER POWER ON (Min)
CHANGE IN INPUT OFFSET VOLTAGE (PV)
T
A
= 25qC
V
S
= 15V
10
5
1 2 3 4
OP27 A/E
OP27 F
OP27 C/G
00317-015
Figure 15. Warm-Up Offset Voltage Drift