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LM49150 - Mono Class D Audio Subsystem

Datasheet Summary

Description

The LM49150 is a fully integrated audio subsystem designed for portable handheld applications such as cellular phones.

Part of National's Power Wise® product family, the LM49150 consumes very low power in the various modes of operation and still providing great audio performance.

Features

  • a patented, ultra low EMI PWM architecture that significantly reduces RF emissions while preserving audio quality. The 42mW/channel headphone drivers feature National’s ground referenced architecture that creates a ground-referenced output from a single supply, eliminating the need for bulky and expensive DC-blocking capacitors, saving space and minimizing cost. The LM49150 features a fully differential mono input, and two single-ended stereo inputs. The three inputs can be mixed/ multiplexed to.

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Datasheet Details

Part number LM49150
Manufacturer National Semiconductor
File Size 786.30 KB
Description Mono Class D Audio Subsystem
Datasheet download datasheet LM49150 Datasheet
Additional preview pages of the LM49150 datasheet.

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Full PDF Text Transcription

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LM49150 Mono Class D Audio Subsystem with Earpiece Driver and Stereo Ground Referenced Headphone Amplifiers LM49150 March 4, 2009 Mono Class D Audio Subsystem with Earpiece Driver and Stereo Ground Referenced Headphone Amplifiers General Description The LM49150 is a fully integrated audio subsystem designed for portable handheld applications such as cellular phones. Part of National's Power Wise® product family, the LM49150 consumes very low power in the various modes of operation and still providing great audio performance. The LM49150 combines a 1.25W mono E2S (Enhanced Emission Suppression) class D amplifier, 135mW Class AB earpiece amplifier, 42mW/channel stereo ground reference headphone amplifiers, volume control, and mixing circuitry into a single device.
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