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4.22 Output Stage Efficiency
0
100
5
10
15
20
25
30
35
40
45
55
60
65
70
75
80
85
95
91.06
51.85
0 20020 40 60 80 100 120 140 160 180
186
7.71
2CHOutputPower-W
Efficiency-%
dx=178.3FFS
dy=39.22V
4.23 Subwoofer Lineout THD vs Output Voltage
0.001
10
0.002
0.005
0.01
0.02
0.05
0.1
0.2
0.5
1
2
5
20m 350m 100m 200m 500m 1 2
V -OutputVoltage-V
O
THD-TotalHarmonicDistortion-%
TAS5342DDV6EVM Performance
Efficiency is tested with two channels carrying an 8- Ω load. The board has been preheated for 1 hour at
1/8 output power.
Figure 25. Output Stage Efficiency
Gain: +2.5 dB set in TAS5508B. 100-Hz input
Figure 26. Subwoofer Lineout THD vs Output Voltage
TAS5342DDV6EVM 22 SLAU239 – February 2008
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