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LM49352 - Mono Class D Audio Codec Subsytem

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.

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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Datasheet Details

Part number LM49352
Manufacturer National Semiconductor Corporation
File Size 311.36 KB
Description Mono Class D Audio Codec Subsytem
Datasheet download datasheet LM49352 Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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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 1.0 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 feature rich portable devices.