Texas Instruments INA1620EVM, Руководство пользователя, Страница: 11 / 24

Frequency (Hz)
Amplitude (
dBV)
0 2000 4000 6000 8000 10000 12000 14000 16000 18000 20000
-160
-140
-120
-100
-80
-60
-40
-20
0
Left Channel
Frequency (Hz)
Amplitude (
dBV)
0 2000 4000 6000 8000 10000 12000 14000 16000 18000 20000
-160
-140
-120
-100
-80
-60
-40
-20
0
Right Channel
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Test Setup and Results
11 SBOU205 – March 2018
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INA1620EVM Audio Amplifier Evaluation Module
Figure 9 shows an FFT of the right channel with a 32- Ω load. The second harmonic was measured to be
–126.90 dBV.
Figure 9. FFT of Right Channel With a 32- Ω Load
Figure 10 shows an FFT of the left channel with a 16- Ω load. The second harmonic was measured to be
–120.25 dBV.
Figure 10. FFT of Left Channel With a 16- Ω Load