LM49250 Datasheet - National Semiconductor

LM49250, Enhanced Emissions Suppression Stereo Class D Audio Sub-System

LM49250 Enhanced Emissions Suppression Stereo Class D Audio Sub-System with Ground Referenced Headphone Amplifier and Mono Earpiece www.DataSheet4U.c.
The LM49250 is a fully integrated audio subsystem designed for stereo cell phone applications.

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Datasheet Details

Part number:

LM49250

Manufacturer:

National Semiconductor

File Size:

1.35 MB

Description:

Enhanced Emissions Suppression Stereo Class D Audio Sub-System

Features

* a new circuit technology that utilizes a charge pump to generate a negative supply voltage. This allows the headphone outputs to be biased about ground, thereby eliminating the output-coupling capacitors. For improved noise immunity, the LM49250 features fully differential left, right and mono input

Applications

* The LM49250 combines a 2.4W/Ch stereo class D speaker amplifiers with a 45mW/Ch stereo ground referenced headphone amplifier, a class AB earpiece amplifier, National 3D enhancement, volume control, and an input mixer into a single device. The filterless class D amplifiers deliver 1.2W/Ch into an 8Ω

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LM49250 Enhanced Emissions Suppression Stereo Class Audio Sub-System National Semiconductor

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