• The LM49352 is a mixed-signal audio subsystem that integrates audio codec functionality with ground-referenced headphone amplifiers, earpiece driver, Class D loudspeaker and audio Digital Signal Processor (DSP) in one miniature 3.3 mm by 3.3 mm package
• The loudspeaker delivers ultra-high efficiency (93 percent at 970 mW from a 4.2 V supply), while the headphone amplifier offers low-power (18 mW) MP3 playback to extend battery life
• The LM49151 analog subsystem integrates an earpiece driver, Class D loudspeaker, ground-referenced headphone amplifiers and automatic level control (ALC) in an ultra-small 2.2 mm by 2.6 mm package
• The LM49151 offers the lowest power in its class, consuming 7.3 mA of quiescent current at 3.3V for the loudspeaker and headphone
• The subsystem's ALC feature provides handset manufacturers with a variety of options to control audio distortion levels and prevent speaker damage

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