OPA171
OPA2171
OPA4171
SBOS516C –SEPTEMBER 2010–REVISED JUNE 2011
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TYPICAL CHARACTERISTICS (continued)
VS = ±18V, VCM = VS/2, RLOAD = 10kΩ connected to VS/2, and CL = 100pF, unless otherwise noted.
OPEN-LOOP GAIN AND PHASE vs FREQUENCY
CLOSED-LOOP GAIN vs FREQUENCY
180
135
90
180
25
20
15
10
5
Gain
135
90
45
0
Phase
0
45
-5
-10
-15
-20
G = 10
G = 1
0
G = -1
-45
-45
1
10
100
1k
10k
100k
1M
10M
10k
100k
1M
10M
100M
Frequency (Hz)
Frequency (Hz)
Figure 19.
Figure 20.
OPEN-LOOP GAIN vs TEMPERATURE
OPEN-LOOP OUTPUT IMPEDANCE vs FREQUENCY
3
1M
5 Typical Units Shown
VS = 2.7V
VS = 4V
100k
10k
1k
2.5
2
VS = 36V
1.5
1
100
10
0.5
0
1
1m
-75 -50 -25
0
25
50
75
100 125 150
1
10
100
1k
10k
100k
1M
10M
Temperature (°C)
Frequency (Hz)
Figure 21.
Figure 22.
SMALL-SIGNAL OVERSHOOT vs CAPACITIVE LOAD
(100mV Output Step)
SMALL-SIGNAL OVERSHOOT vs CAPACITIVE LOAD
(100mV Output Step)
50
50
RL = 10kW
ROUT = 0W
ROUT = 25W
ROUT = 50W
45
40
35
30
25
20
15
10
5
45
40
35
30
25
20
15
10
5
G = +1
+18V
OPA171
-18V
RF = 10kW
RI = 10kW
G = -1
ROUT = 0W
ROUT = 25W
ROUT = 50W
ROUT
+18V
ROUT
RL
CL
OPA171
CL
-18V
0
0
0
100 200 300 400 500 600 700 800 900 1000
Capacitive Load (pF)
0
100 200 300 400 500 600 700 800 900 1000
Capacitive Load (pF)
Figure 23.
Figure 24.
10
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