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| OPA1688 Datasheet, PDF (12/41 Pages) Texas Instruments – OPA168x SoundPlus 36-V, Single-Supply, 10-MHz, Rail-to-Rail Output Operational Amplifiers | |||
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OPA1688, OPA1689
SBOS724 â SEPTEMBER 2015
Typical Characteristics (continued)
VS = ±18 V, VCM = VS / 2, RLOAD = 10 kΩ connected to VS / 2, and CL = 100 pF, unless otherwise noted.
1000
www.ti.com
100
10
0.01
0.001
Time (1 s/div)
Peak-to-peak noise = 1.70 µVPP
Figure 13. 0.1-Hz to 10-Hz Noise
G = +1 V/V, 10-k Load
G = +1 V/V, 2-k Load
G = +1 V/V, 600- Load
G = -1 V/V, 10-k Load
G = -1 V/V, 2-k Load
G = -1 V/V, 600- Load
C001
-80
-100
0.0001
-120
0.00001
10
100
1k
10k
Frequency (Hz)
VOUT = 3.5 VRMS, BW = 50 kHz
-140
C007
Figure 15. THD+N Ratio vs Frequency
0.1
-60
G = -1, 16- Load
G = -1, 32- Load
G = -1, 128- Load
0.01
G = +1, 16- Load
-80
G = +1, 32- Load
G = +1, 128- Load
0.001
-100
0.0001
10
100
1000
10000
Frequency (Hz)
POUT = 10 mW, BW = 80 kHz, VS = ±5 V
-120
C003
Figure 17. THD+N vs Frequency
1
0.1
1
10
100
1k
10k
100k
Frequency (Hz)
C002
Figure 14. Input Voltage Noise Spectral Density vs
Frequency
1.
-40
G = +1 V/V, 10-k Load
G = +1 V/V, 2-k Load
0.1
G = -1 V/V, 10-k Load -60
G = -1 V/V, 2-k Load
G = -1 V/V, 600- Load
0.01
G = +1 V/V, 600- Load -80
0.001
-100
0.0001
-120
0.00001
0.01
0.1
1
Output Amplitude (VRMS)
f = 1 kHz, BW = 80 kHz
-140
10
C008
Figure 16. THD+N vs Output Amplitude
1
-40
0.1
-60
Inverting
0.01
-80
Noninverting
0.001
16- Load
32- Load
0.0001
0.001
128- Load
0.01
0.1
1
Amplitude (VRMS)
f = 1 kHz, BW = 80 kHz, VS = ±5 V
-100
-120
10
C004
Figure 18. THD+N vs Amplitude
12
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