OP37
CHANGE IN INPUT OFFSET VOLTAGE – V
40
OFFSET VOLTAGE – V
OP37B
OP37A
OP37B
OP37A
OP37A
OP37B
TRIMMING WITH
10k POT DOES
NOT CHANGE
TCV
OS
CHANGE IN OFFSET VOLTAGE – V
60
50
30
20
10
0
–10
–20
–30
–40
–50
–60
–70
–75 –50 –25
OP37C
6
4
2
0
–2
–4
–6
6
4
2
0
–2
–4
–6
0
1
2
3
4
5
6
7
TIME – MONTHS
T
A
= 25 C
V
S
= 15V
10
OP37C/G
OP37F
5
OP37A/E
OP37C
0 25 50 75 100 125 150 175
TEMPERATURE – C
1
0
1
2
3
4
5
TIME AFTER POWER ON – MINUTES
TPC 10. Offset Voltage Drift of Eight
Representative Units vs. Temperature
TPC 11. Long-Term Offset Voltage
Drift of Six Representative Units
TPC 12. Warm Up Offset Voltage Drift
30
V
S
= +15V
INPUT BIAS CURRENT – nA
50
V
S
= +15V
INPUT OFFSET CURRENT – nA
50
V
S
=
40
15V
25
OPEN-LOOP GAIN – dB
20
T
A
=
25 C
T
A
= 70 C
THERMAL SHOCK
RESPONSE BAND
40
30
OP37C
20
30
15
20
OP37C
10
OP37B
OP37A
0
–75 –50
–25 0
25
50 75
TEMPERATURE – C
100
125
10
DEVICE IMMERSED
IN 70 C OIL BATH
5
10
OP37B
OP37A
0
–20
0
20
40
60
80
100
0
–50 –25
0
25
50
75
100 125 150
TEMPERATURE – C
TIME – Seconds
TPC 13. Offset Voltage Change Due
to Thermal Shock
140
T
A
= 25 C
V
S
= 15V
R
L
2k
TPC 14. Input Bias Current vs. Temperature
TPC 15. Input Offset Current vs.
Temperature
60
–80
T
A
= 25 C
V
S
= 15V
–100
–120
PHASE
MARGIN
= 71
A
V
= 5
10
0
–10
100k
–180
–200
–220
100M
–140
–160
PHASE MARGIN – DEG
80
75
70
65
60
55
30
25
20
15
10
–50
–25
0
25
50
75
100
SLEW
GBW
V
S
=
M
15V
90
GAIN-BANDWIDTH PRODUCT – MHz
F = 10kHz
OPEN-LOOP VOLTAGE GAIN – dB
120
100
80
60
40
20
0
85
80
75
70
65
60
55
50
45
40
125
50
40
30
20
1
10
10
2
10
3
10
4
10
5
10
6
FREQUENCY – Hz
10
7
10
8
SLEW RATE – V/ s
TEMPERATURE – C
1M
10M
FREQUENCY – Hz
TPC 16. Open-Loop Gain vs. Frequency
TPC 17. Slew Rate, Gain Bandwidth
Product, Phase Margin vs. Temperature
TPC 18. Gain, Phase Shift vs. Frequency
–8–
REV. A
PHASE SHIFT – Degrees
GAIN – dB
AD [ ANALOG DEVICES ]
