Datasheet

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6.2 THD+N vs Voltage (100-k Ω load)
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-%
10m 420m 50m 100m 200m 500m 1 2
V -OutputVoltage-Vrms
O
3.3VDVDD
4.5VDVDD
1.8VDVDD
0.001
10
0.002
0.005
0.01
0.02
0.05
0.1
0.2
0.5
1
2
5
THD+N-T
otalHarmonicDistortionPlusNoise-%
250m 4500m 750m 1.25 1.5 1.75 2 2.25 2.5 2.75 3 3.25 3.5 3.751
V -OutputVoltage-Vrms
O
1.8VDVDD
3.3VDVDD
4.5VDVDD
DRV601EVM Performance
Figure 8. THD+N vs Voltage (100-k Ω load)
The THD+N in the range from 10mVrms to 1Vrms is completely dominated by noise.
Figure 9. THD+N vs Voltage (100- Ω load) Linear Scale
Here the THD+N versus output voltage is shown with linear scale; this makes it easier to see where
clipping occurs. Clipping is often defines as THD+N = 1%. For the DRV601 this is over 2.25 Vrms with a
3.3-V supply and 100-k Ω load.
DRV601EVM 10 SLOU215 – January 2008
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