OP27A, OP27C
LOW-NOISE HIGH-SPEED PRECISION OPERATIONAL-AMPLIFIER
SLOS100E − FEBRUARY 1989 − REVISED FEBRUARY 2010
TYPICAL CHARACTERISTICS
INPUT OFFSET VOLTAGE OF
REPRESENTATIVE INDIVIDUAL UNITS
vs
FREE-AIR TEMPERATURE
100
ΔV
IO − Change in Input Offset Voltage −
μ
V
80
VIO − Input Offset Voltage −
μV
60
OP27A
40
20
0
− 20
− 40
− 60
− 80
− 100
− 50
− 25
0
25
50
75
100
125
OP27C
OP27A
V
CC
±
=
±
15 V
OP27C
10
OP27C
V
CC
±
=
±
15 V
T
A
= 25°C
WARM-UP CHANGE IN
INPUT OFFSET VOLTAGE
vs
ELAPSED TIME
5
OP27A
0
1
2
3
4
5
T
A
− Free-Air Temperature −
°C
Time After Power On − minutes
Figure 1
Figure 2
LONG-TERM DRIFT OF INPUT OFFSET VOLTAGE OF
REPRESENTATIVE INDIVIDUAL UNITS
6
ΔV
IO − Change in Input Offset Voltage −
μ
V
0.2-μV/mo Trend Line
4
2
0
−2
−4
0.2-μV/mo Trend Line
−6
0
1
2
3
4
5
6
7
8
Time − months
Figure 3
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•
DALLAS, TEXAS 75265
7
TI [ TEXAS INSTRUMENTS ]
