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LM49270 Datasheet Filterless 2.2W Stereo Class D Audio Subsystem

Manufacturer: National Semiconductor (now Texas Instruments)

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General Description

The LM49270 is a fully integrated audio subsystem designed for stereo multimedia applications.

The LM49270 combines a 2.2W stereo Class D amplifier with a 155mW stereo headphone amplifier, volume control, headphone sense, and National’s unique 3D sound enhancement into a single device.

The LM49270 uses flexible I2C control interface for multiple application requirements.

Overview

LM49270 Filterless 2.2W Stereo Class D Audio Subsystem with OCL Headphone Amplifier, 3D Enhancement, and Headphone Sense December 2006 LM49270  Filterless 2.

Key Features

  • National’s Output Capacitor-less (OCL) architecture that eliminates the output coupling capacitors required by traditional headphone amplifiers. The IC features a headphone sense input (HPS) that automatically detects the presence of a headphone and configures the device accordingly. The LM49270 can automatically switch from OCL headphone output to a line driver output. If the VOC pin is pulled to GND, the VOC amplifier is disabled and the VOC pin is internally set to GND. This feature allows th.

📁 Similar Datasheet

Brand Logo Part Number Description Manufacturer
Texas Instruments Logo LM49270 Filterless 2.2W Stereo Class D Audio Subsystem Texas Instruments

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