Output Stage Efficiency - Texas Instruments PurePath Digital TAS5342DDV6EVM User Manual

TAS5342DDV6EVM Performance

4.22 Output Stage Efficiency

Efficiency is tested with two channels carrying an 8-Ω load. The board has been preheated for 1 hour at
1/8 output power.
100
95
91.06
85
80
75
70
65
60
55
51.85
45
40
35
30
25
20
15
10
5
0
4.23 Subwoofer Lineout THD vs Output Voltage
Gain: +2.5 dB set in TAS5508B. 100-Hz input
10
0.5
0.2
0.1
0.05
0.02
0.01
0.005
0.002
0.001
22
TAS5342DDV6EVM
dx = 178.3 FFS
dy = 39.22 V
0 7.71 20 40 60
Figure 25. Output Stage Efficiency
5
2
1
20m 50m 100m
Figure 26. Subwoofer Lineout THD vs Output Voltage
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80 100 120 140
2 CH Output Power - W
200m 500m
V - Output Voltage - V
O
SLAU239A – February 2008 – Revised September 2015
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160 180 200
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