Datasheet

OP1177/OP2177/OP4177
Rev. G | Page 7 of 24
FREQUENCY (Hz)
CLOSED-LOOP GAIN (dB)
10k 100k 1M 10M
100
80
60
40
20
0
–20
–40
–60
120
–80
1k 100M
V
SY
= ±15V
V
IN
= 4mV p-p
C
L
= 0
R
L
= ∞
A
V
= 100
A
V
= 1
A
V
= 10
02627-013
Figure 13. Closed-Loop Gain vs. Frequency
FREQUENCY (Hz)
OUTPUT IMPEDANCE (Ω)
1k 10k 100k 1M
450
400
350
300
250
200
150
100
50
100
500
0
V
SY
= ±15V
V
IN
= 50mV p-p
A
V
= 10
A
V
= 100
A
V
= 1
0
2627-014
Figure 14. Output Impedance vs. Frequency
TIME (100µs/DIV)
VOLTAGE (1V/DIV)
GND
V
SY
= ±15V
C
L
= 300pF
R
L
= 2kΩ
V
IN
= 4V
A
V
= 1
02627-015
Figure 15. Large Signal Transient Response
TIME (100µs/DIV)
VOLTAGE (100mV/DIV)
GND
V
SY
= ±15V
C
L
= 1,000pF
R
L
= 2kΩ
V
IN
= 100mV
A
V
= 1
02627-016
Figure 16. Small Signal Transient Response
CAPACITANCE (pF)
SMALL SIGNAL OVERSHOOT (%)
10 100 1k
1 10k
45
40
35
30
25
20
15
10
5
50
0
+OS
–OS
V
SY
= ±15V
R
L
= 2kΩ
V
IN
= 100mV p-p
02627-017
Figure 17. Small Signal Overshoot vs. Load Capacitance
TIME (10µs/DIV)
+200m
V
0V
–15V
0V
V
SY
= ±15V
R
L
= 10kΩ
A
V
= –100
V
IN
= 200mV
INPUT
OUTPUT
0
2627-018
Figure 18. Positive Overvoltage Recovery