OPA188 Datasheet, PDF (12/23 Pages) Texas Instruments – 0.03-uV/C Drift, Low-Noise, Rail-to-Rail Output, 36-V, Zero-Drift OPERATIONAL AMPLIFIERS

OPA188
OPA2188
OPA4188
SBOS525 – AUGUST 2011
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TYPICAL CHARACTERISTICS (continued)
V_S = ±18 V, V_CM = V_S/2, R_LOAD = 10 kΩ connected to V_S/2, and C_L = 100 pF, unless otherwise noted.
QUIESCENT CURRENT vs TEMPERATURE
OPEN-LOOP GAIN AND PHASE vs FREQUENCY
0.5
0.48
0.46
V_S = ±18 V
V_S = ±2 V
0.44
180
Gain
135
0
Phase
-45
0.42
90
-90
0.4
0.38
45
-135
0.36
0.34
0
-180
0.32
0.3
-55 -35 -15
5 25 45 65
Temperature (°C)
85 105 125
-45
0.1 1
-225
10 100 1k 10k 100k 1M 10M
Frequency (Hz)
Figure 19.
Figure 20.
CLOSED-LOOP GAIN vs FREQUENCY
25
20
15
10
5
0
-5
-10
G = 10
-15
G = +1
G = -1
-20
10k
100k
1M
10M
Frequency (Hz)
Figure 21.
OPEN-LOOP GAIN vs TEMPERATURE
3
V_SUPPLY = 4 V, R_L = 10 kW
2.5
V_SUPPLY = 36 V, R_L = 10 kW
2
1.5
1
0.5
0
-55 -35 -15
5 25 45 65
Temperature (°C)
Figure 22.
85 105 125
OPEN-LOOP OUTPUT IMPEDANCE vs FREQUENCY
10k
1k
100
10
1
1m
1
10 100 1k 10k 100k 1M 10M
Frequency (Hz)
Figure 23.
SMALL-SIGNAL OVERSHOOT vs CAPACITIVE LOAD
(100-mV Output Step)
40
R_L = 10 kW
35
R_OUT = 0 W
30
R_OUT = 25 W
25
R_OUT = 50 W
20
15
G = +1
+18 V
10
Device
ROUT
-18 V
RL
CL
5
0
0 100 200 300 400 500 600 700 800 900 1000
Capacitive Load (pF)
Figure 24.
12
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