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LM49151 - Mono Class D Audio Subsystem

General Description

The LM49151 is a fully integrated audio subsystem designed for portable handheld applications such as cellular phones.

Key Features

  • National’s unique Automatic Level Control (ALC) that provides both a I2C programmable no-clip feature with Clip Controls and speaker protection. The E2S (Enhanced Emission Suppression) class D amplifier features a patented, ultra low EMI PWM architecture that significantly reduces RF emissions while preserving audio quality and efficiency while delivering 1.25W into an 8Ω load with.

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Datasheet Details

Part number LM49151
Manufacturer National Semiconductor Corporation
File Size 189.67 KB
Description Mono Class D Audio Subsystem
Datasheet download datasheet LM49151 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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LM49151 PRODUCT BRIEF LM49151 PRODUCT BRIEF www.datasheet4u.com PRELIMINARY March 26, 2009 Mono Class D Audio Subsystem with Earpiece Driver, Ground Referenced Headphone Amplifiers, Speaker Protection and No Clip with Clip Control General Description The LM49151 is a fully integrated audio subsystem designed for portable handheld applications such as cellular phones. The LM49151 combines a 1.25W mono E2S class D amplifier, 125mW Class AB earpiece driver, 42mW/channel stereo ground referenced headphone drivers, volume control, input mixer/multiplexer, and speaker protection into a single device. The LM49151 class D speaker amplifier features National’s unique Automatic Level Control (ALC) that provides both a I2C programmable no-clip feature with Clip Controls and speaker protection.