OPA2180 Datasheet, PDF (8/25 Pages) Texas Instruments – 0.1-μV/°C Drift, Low-Noise, Rail-to-Rail Output, 36-V, Zero-Drift OPERATIONAL AMPLIFIERS

OPA2180
OPA4180
SBOS584B – NOVEMBER 2011 – REVISED DECEMBER 2011
www.ti.com
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.
OPEN-LOOP GAIN AND PHASE vs FREQUENCY
OPEN-LOOP GAIN vs TEMPERATURE
140
Gain
120
Phase
100
180
3
V_SUPPLY = 4 V, R_L = 10 kW
2.5
V_SUPPLY = 36 V, R_L = 10 kW
135
80
2
60
90
1.5
40
1
20
45
0
−20
0
10 100 1k 10k 100k 1M 10M 100M
Frequency (Hz)
G007
Figure 7.
0.5
0
-55 -35 -15
5 25 45 65
Temperature (°C)
Figure 8.
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 9.
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 10.
SMALL-SIGNAL OVERSHOOT vs CAPACITIVE LOAD
(100-mV Output Step)
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
ROUT
Device
CL
-18 V
600 700 800 900 1000
Capacitive Load (pF)
Figure 11.
NO PHASE REVERSAL
+18 V
Device
-18 V
37 VPP
Sine Wave
(±18.5 V)
V_IN
V_OUT
Time (100 ms/div)
Figure 12.
8
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