LM49352 Datasheet Mono Class D Audio Codec Subsytem

Manufacturer: National Semiconductor Corporation

Overview: LM49352 PRODUCT BRIEF LM49352 PRODUCT BRIEF www.datasheet4u.com PRELIMINARY March 24, 2009 Mono Class D Audio Codec Subsystem with Ground Referenced Headphone Amplifiers, Earpiece Driver, and Audio DSP 1.

Datasheet Details

Part number	LM49352
Manufacturer	National Semiconductor Corporation
File Size	311.36 KB
Description	Mono Class D Audio Codec Subsytem
Datasheet	LM49352_NationalSemiconductorCorporation.pdf

General Description

The LM49352 is a high performance mixed signal audio subsystem.

The LM49352 includes a high quality stereo DAC, a high quality stereo ADC, a stereo headphone amplifier, which supports True Ground operation, a low EMI Class D loudspeaker amplifier, and an earpiece speaker amplifier.

It combines advanced audio processing, conversion, mixing, and amplification in the smallest possible footprint while extending the battery life of

Key Features

dual bi-directional I2S or PCM audio interfaces and an I2C compatible interface for control. The stereo DAC path features an SNR of 103dB with 24-bit 48 kHz input. The headphone amplifier delivers 65mWRMS (typ) to a 32Ω single-ended stereo load with less than 1% distortion (THD+N) when HP_VDD = 2.8V. The loudspeaker amplifier delivers up to 970mW into an 8Ω load with less than 1% distortion when LS_VDD = 4.2V. The LM49352 employs advanced techniques to extend battery life, to reduce controller o.

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