OPA1678 Datasheet, PDF (13/41 Pages) Texas Instruments – Low-Distortion Audio Operational Amplifiers

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Typical Characteristics (continued)
at T_A = 25°C, V_S = ±15 V, and R_L = 2 kΩ, unless otherwise noted
70
60
50
40
30
20
10
0
0
100
200
300
400
500
600
Capacitive Load (pF)
C002
G=1
Figure 25. Phase Margin vs Capacitive Load
10
5
0
-5
-10
-15
-20
10000
Time (500 ns/div)
VIN
VOUT
C004
Gain = –10 V/V
Figure 27. Negative Overload Recovery
1000
100
10
1
10 100 1k 10k 100k 1M 10M 100M
Frequency (Hz)
C015
Figure 29. Open-Loop Output Impedance vs Frequency
OPA1678, OPA1679
SBOS855 – FEBRUARY 2017
60
50
40
30
20
10
0
0
VS = +/- 18 V
VS = +/- 2.25 V
100
200
300
400
500
600
Capacitive Load (pF)
C001
G=1
Figure 26. Percent Overshoot vs Capacitive Load
20
15
10
5
0
-5
VIN
-10
VOUT
Time (500 ns/div)
C004
Gain = –10 V/V
Figure 28. Positive Overload Recovery
20
15
10
5
0
-5
-10
-15
VIN
-20
VOUT
Time (125 s/div)
C004
Gain = 1 V/V
Figure 30. No Phase Reversal
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