OP27A Datasheet, PDF (13/21 Pages) Texas Instruments – LOW-NOISE HIGH-SPEED PRECISION OPERATIONAL AMPLIFIERS

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
PHASE MARGIN AND
GAIN-BANDWIDTH PRODUCT
GAIN-BANDWIDTH PRODUCT
vs
vs
FREE-AIR TEMPERATURE
FREE-AIR TEMPERATURE
85°
VCC _± = ± 15 V
80°
11
80°
VCC _± = ± 15 V
10.6
75°
φ_m
85
75°
10.2
70°
80
φ_m
70°
9.8
65°
75
65°
60°
ÁÁ55°
ÁÁ_50°
45°
40°
GBW (f = 100 kHz)
9.4
60°
9
55°
ÁÁ 8.6
50°
ÁÁ _8.2
45°
7.8
40°
7.4
35°
70
GBW (f = 10 kHz)
65
60
55
50
45
35°
– 75 – 50 – 25 0
7
25 50 75 100 125
TA – Free-Air Temperature – °C
Figure 20
30°
– 50
– 25 0
25 50 75 100
TA – Free-Air Temperature – °C
Figure 21
40
125
EQUIVALENT INPUT NOISE VOLTAGE
vs
BANDWIDTH
10
VCC _± = ± 15 V
RS = 20 Ω
TA = 25°C
1
TOTAL EQUIVALENT INPUT NOISE VOLTAGE
vs
SOURCE RESISTANCE
100
VCC _± = ± 15 V
BW = 1 Hz
TA = 25°C
R1
–
+
R2
RS = R1 + R2
10
f = 10 Hz
0.1
f = 1 kHz
Resistor Noise Only
0.01
0.1
1
10
100
Bandwidth – kHz
(0.1 Hz to frequency indicated)
1
100
1k
10 k
RS – Source Resistance – Ω
Figure 22
Figure 23
† _{Data for temperatures below – 25°C and above 85°C are applicable to the OP27A, OP27C, OP37A, and OP37C only.}
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