CS42L51 View Datasheet(PDF) - Cirrus Logic

Part Name

Description

MFG CO.

CS42L51

Low Power, Stereo CODEC with Headphone Amp

Cirrus Logic 

CS42L51

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

w/16 Ω load. HP_GAIN = 1.1430. Best efficiency is realized when the amplifier outputs maximum power.

VA_HP = VA = 1.8 V

Figure 31. Power Dissipation vs. Output Power into Stereo 16 Ω

VA_HP = VA = 1.8 V

Figure 32. Power Dissipation vs. Output Power into Stereo 16 Ω (Log Detail)

DS679F1

77

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