Cirrus-logic CS43L21 User Manual Page 57

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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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