Thd+N Vs Voltage (100-Kω Load); Thd+N Vs Voltage (100-Ω Load) Linear Scale - Texas Instruments DRV601EVM User Manual

DRV601EVM Performance
6.2 THD+N vs Voltage (100-kΩ load)
10
0.5
0.2
0.1
0.05
0.02
0.01
0.005
0.002
0.001
The THD+N in the range from 10mVrms to 1Vrms is completely dominated by noise.
10
0.5
0.2
0.1
0.05
0.02
0.01
0.005
0.002
0.001
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-kΩ load.
10 DRV601EVM
5
2
1
10m 20m 50m
V - Output Voltage - Vrms
Figure 8. THD+N vs Voltage (100-kΩ load)
5
1.8 V DVDD
2
1
250m 500m 750m 1 1.25 1.5 1.75
Figure 9. THD+N vs Voltage (100-Ω load) Linear Scale
1.8 V DVDD
3.3 V DVDD
4.5 V DVDD
100m 200m 500m
O
3.3 V DVDD
2 2.25 2.5 2.75
V - Output Voltage - Vrms
O
www.ti.com
1 2 4
4.5 V DVDD
3 3.25 3.5 3.75 4
SLOU215 – January 2008
Submit Documentation Feedback