OPA4188 Datasheet, PDF (14/35 Pages) Texas Instruments – Zero-Drift Operational Amplifiers

OPA4188
SBOS641C – JUNE 2012 – REVISED NOVEMBER 2015
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.
40
R_OUT = 0 W
35
R_OUT = 25 W
30
R_OUT = 50 W
25
20
15
10
5
R_L = 10 kW
0
0 100 200
300
400
500
G = -1 ^RI ^{= 10 kW R}F ^{= 10 kW}
+18 V
Device
-18 V
ROUT
CL
600 700 800 900 1000
Capacitive Load (pF)
V_IN
V_OUT
Time (100 ms/div)
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+18 V
Device
-18 V
37 VPP
Sine Wave
(±18.5 V)
Figure 25. Small-Signal Overshoot vs Capacitive Load
(100-mV Output Step)
Figure 26. No Phase Reversal
V_OUT
2 kW
VIN
20 kW
+18 V
Device
VOUT
-18 V
G = -10
V_IN
Time (5 ms/div)
V_IN
2 kW
VIN
20 kW
+18 V
Device
VOUT
-18 V
G = -10
V_OUT
Time (5 ms/div)
Figure 27. Positive Overload Recovery
R_L = 10 kW
C_L = 10 pF
Figure 28. Negative Overload Recovery
R_L = 10 kW
C_L = 10 pF
+18 V
Device
-18 V
G = +1
RL
CL
Time (1 ms/div)
Figure 29. Small-Signal Step Response (100 mV)
R_I = 2 kW R_F = 2 kW
+18 V
Device
G = -1
C_L
-18 V
Time (20 ms/div)
Figure 30. Small-Signal Step Response (100 mV)
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