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6.3 THD+N vs Frequency (600R Load)
1 31.2
1.4
1.6 1.8
2
2.2 2.4 2.6 2.8
0.001
10
0.002
0.005
0.01
0.02
0.05
0.1
0.2
0.5
1
2
5
THD+N-TotalHarmonicDistortionPlusNoise-%
V -OutputVoltage-Vrms
O
3.3VDVDD
3.63VDVDD
3.3VDVDD
-100
-20
-95
-90
-85
-80
-75
-70
-65
-60
-55
-50
-45
-40
-35
-30
-25
10m 3
20m 50m
100m
200m 500m
1 2
T
V -OutputVoltage-Vrms
O
THD+N-TotalHarmonicDistortionPlusNoise-dB
3.3VDVDD
DRV601EVM Performance
Figure 10. THD+N vs Voltage (600- Ω Load)
Here the clipping is shown with a 3.3-V supply, and ± 10% tolerance. It shows that even with a low DVDD,
3.3 V–10% , the DRV601 can achieve the 2 Vrms with a THD+N less than 1%.
2 Vrms is equal to 2.848-Vpeak; that is only 142-mV drop from the 2.97-V supply
Figure 11. THD+N vs Voltage (100-k Ω Load)
With the THD+N in dB scale. 0.001% corresponds to –100 dB.
SLOU215 – January 2008 DRV601EVM 11
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