OPA1678 Datasheet, PDF (10/41 Pages) Texas Instruments – Low-Distortion Audio Operational Amplifiers

OPA1678, OPA1679
SBOS855 – FEBRUARY 2017
Typical Characteristics (continued)
at T_A = 25°C, V_S = ±15 V, and R_L = 2 kΩ, unless otherwise noted
0.1
Gain = 10 V/V
Gain = 1 V/V
Gain = -1 V/V
0.01
-60
0.1
-80
0.01
Gain = 10 V/V
Gain = 1 V/V
Gain = -1 V/V
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-60
-80
0.001
-100
0.001
-100
0.0001
-120
0.0001
-120
0.00001
10
V_OUT = 3 V_RMS
100
1k
Frequency (Hz)
R_L = 2 kΩ
-140
10k
C002
Bandwidth = 80 kHz
Figure 7. THD+N Ratio vs Frequency
0.1
-60
0.00001
10
V_OUT = 3 V_RMS
100
1k
Frequency (Hz)
R_L = 600 Ω
-140
10k
C002
Bandwidth = 80 kHz
Figure 8. THD+N Ratio vs Frequency
0.1
-60
0.01
-80
0.01
-80
0.001
-100
0.001
-100
0.0001
0.00001
0.001
f = 1 kHz
-120
Gain = 1 V/V
Gain = -1 V/V
Gain = 10 V/V
0.01
0.1
1
-140
10
Output Amplitude (V_RMS)
C002
R_L = 2 kΩ
Bandwidth = 80 kHz
Figure 9. THD+N Ratio vs Output Amplitude
±60
±70
±80
±90
±100
±110
±120
±130
±140
±150
±160
10
100
V_OUT = 3 V_RMS
1k
10k 100k 1M
Frequency (Hz)
Gain = 1 V/V
10M
C006
Figure 11. Channel Separation vs Frequency
0.0001
0.00001
0.001
f = 1 kHz
-120
Gain = 1 V/V
Gain = -1 V/V
Gain = 10 V/V
0.01
0.1
1
-140
10
Output Amplitude (V_RMS)
C002
R_L = 600 Ω
Bandwidth = 80 kHz
Figure 10. THD+N Ratio vs Output Amplitude
140
120
100
80
60
40
20
0
10
CMRR
PSRR(+)
PSRR(-)
100
1k
10k 100k 1M
Frequency (Hz)
10M
C006
Figure 12. CMRR and PSRR vs Frequency
(Referred to Input)
10
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