OP27A, OP27C, OP27E, OP27G
OP37A, OP37C, OP37E, OP37G
LOW-NOISE HIGH-SPEED PRECISION OPERATIONAL AMPLIFIERS
SLOS100B – FEBRUARY 1989 – REVISED AUGUST 1994
†
TYPICAL CHARACTERISTICS
OP27
OP37
PHASE MARGIN AND
GAIN-BANDWIDTH PRODUCT
vs
PHASE MARGIN AND
GAIN-BANDWIDTH PRODUCT
vs
FREE-AIR TEMPERATURE
FREE-AIR TEMPERATURE
80°
75°
70°
65°
60°
55°
50°
45°
40°
35°
30°
85°
80°
11
V
CC±
= ±15 V
V
CC±
= ±15 V
85
80
75
70
65
60
55
50
45
40
10.6
10.2
9.8
9.4
9
φ
m
75°
70°
φ
m
65°
60°
GBW (f = 10 kHz)
55°
50°
8.6
8.2
7.8
7.4
7
GBW (f = 100 kHz)
45°
40°
35°
– 75 – 50 – 25
0
25
50
75
100 125
– 50 – 25
0
25
50
75
100
125
T
A
– Free-Air Temperature – °C
T
A
– Free-Air Temperature – °C
Figure 20
Figure 21
EQUIVALENT INPUT NOISE VOLTAGE
TOTAL EQUIVALENT INPUT NOISE VOLTAGE
vs
vs
BANDWIDTH
SOURCE RESISTANCE
100
10
1
10
V
R
T
A
= ±15 V
R1
V
= ±15 V
CC±
= 20 Ω
CC±
BW = 1 Hz
= 25°C
–
+
S
= 25°C
T
A
R2
R
= R1 + R2
S
1
f = 10 Hz
f = 1 kHz
0.1
Resistor Noise Only
0.01
1 k
10 k
100
0.1
1
10
100
R
– Source Resistance – Ω
Bandwidth – kHz
(0.1 Hz to frequency indicated)
S
Figure 22
Figure 23
†
Data for temperatures below – 25°C and above 85°C are applicable to the OP27A, OP27C, OP37A, and OP37C only.
2–13
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
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TI [ TEXAS INSTRUMENTS ]
