2 headphone amplifier efficiency, Cs43l21 – Cirrus Logic CS43L21 User Manual
Page 57
DS723F1
57
CS43L21
7.2
Headphone Amplifier Efficiency
The architecture of the headphone amplifier is that of typical class AB amplifiers. Test conditions (unless
otherwise specified): Input test signal is a 997 Hz sine wave; Power Consumption Mode 6 - Stereo Playback
with 16-
load. HP_GAIN = 1.1430. Best efficiency is realized when the amplifier outputs maximum power.
Figure 25. Power Dissipation vs. Output Power into Stereo 16
VA_HP = VA = 1.8 V
Figure 26. Power Dissipation vs. Output Power into Stereo 16
(Log Detail)
VA_HP = VA = 1.8 V
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