OP27GU Datasheet, PDF (12/22 Pages) Texas Instruments – LOW-NOISE HIGH-SPEED PRECISION OPERATIONAL AMPLIFIERS

OP27A, OP27C
LOW-NOISE HIGH-SPEED PRECISION OPERATIONAL-AMPLIFIER
SLOS100E − FEBRUARY 1989 − REVISED FEBRUARY 2010
TYPICAL CHARACTERISTICS
EQUIVALENT INPUT NOISE VOLTAGE
vs
BANDWIDTH
10
V_{CC ±} = ± 15 V
R_S = 20 Ω
T_A = 25°C
1
TOTAL EQUIVALENT INPUT NOISE VOLTAGE
vs
SOURCE RESISTANCE
100
V_{CC ±} = ± 15 V
BW = 1 Hz
T_A = 25°C
R1
−
+
R2
R_S = 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)
Figure 17
OP27A
EQUIVALENT INPUT NOISE VOLTAGE
vs
TOTAL SUPPLY VOLTAGE
20
R_S = 20 Ω
BW = 1 Hz
T_A = 25°C
15
f = 10 Hz
f = 1 kHz
10
1
100
1k
10 k
R_S − Source Resistance − Ω
Figure 18
OP27A
EQUIVALENT INPUT NOISE VOLTAGE
vs
FREE-AIR TEMPERATURE
5
V_{CC ±} = ± 15 V
R_S = 20 Ω
BW = 1 Hz
4
f = 10 Hz
3
f = 1 kHz
5
2
0
0
10
20
30
40
V_{CC +} − V_{CC −} − Total Supply Voltage − V
Figure 19
1
− 50 − 25 0
25 50 75 100 125
T_A − Free-Air Temperature − °C
Figure 20
12
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