OP27A, OP27C, OP27E, OP27G
OP37A, OP37C, OP37E, OP37G
LOW-NOISE HIGH-SPEED PRECISION OPERATIONAL AMPLIFIERS
SLOS100B – FEBRUARY 1989 – REVISED AUGUST 1994
†
TYPICAL CHARACTERISTICS
OP27A, OP27E, OP37A, OP37E
EQUIVALENT INPUT NOISE VOLTAGE
vs
OP27A, OP27E, OP37A, OP37E
EQUIVALENT INPUT NOISE VOLTAGE
vs
TOTAL SUPPLY VOLTAGE
FREE-AIR TEMPERATURE
20
15
10
5
5
4
3
2
R
= 20 Ω
V
R
= ±15 V
S
CC±
= 20 Ω
BW = 1 Hz
T
A
S
= 25°C
BW = 1 Hz
f = 10 Hz
f = 1 kHz
f = 10 Hz
f = 1 kHz
0
1
0
10
– V
20
30
40
– 50 – 25
0
25
50
75
100
125
V
CC+
– Total Supply Voltage – V
T
A
– Free-Air Temperature – °C
CC–
Figure 24
Figure 25
OP27A, OP27E, OP37A, OP37E
EQUIVALENT INPUT NOISE CURRENT
EQUIVALENT INPUT NOISE VOLTAGE
vs
vs
FREQUENCY
FREQUENCY
10
10
9
8
V
R
= ±15 V
V
= ±15 V
CC±
= 20 Ω
CC±
BW = 1 Hz
T = 25°C
A
S
7
BW = 1 Hz
= 25°C
T
A
6
5
4
1
3
2
1/f Corner = 2.7 Hz
1/f Corner = 140 Hz
1
0.1
10
100
1 k
10 k
1
10
100
1000
f – Frequency – Hz
f – Frequency – Hz
Figure 26
Figure 27
†
Data for temperatures below – 25°C and above 85°C are applicable to the OP27A, OP27C, OP37A, and OP37C only.
2–14
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443
TI [ TEXAS INSTRUMENTS ]
