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LM49155 - Uplink Noise Suppression & Downlink SNR Enhancement Analog Audio Subsystem

General Description

The LM49155 is a fully integrated audio subsystem designed for portable handheld applications such as cellular phones.

Key Features

  • analog fully differential input, and differential output microphone amplifier designed to reduce background acoustic noise, while delivering superb speech clarity in voice communication.

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Datasheet Details

Part number LM49155
Manufacturer National Semiconductor Corporation
File Size 204.10 KB
Description Uplink Noise Suppression & Downlink SNR Enhancement Analog Audio Subsystem
Datasheet download datasheet LM49155 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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DataSheet.in LM49155 Product Brief LM49155 PRODUCT BRIEF PRELIMINARY July 21, 2010 Uplink Noise Suppression & Downlink SNR Enhancement Analog Audio Subsystem General Description The LM49155 is a fully integrated audio subsystem designed for portable handheld applications such as cellular phones. The LM49155 combines a Noise Suppression microphone amplifier, a 1.35W mono class D amplifier with ALC, class AB earpiece driver with AGC, a high efficiency, stereo, ground referenced headphone amplifier with click pop suppression and I2C modes select and volume control. The LM49155 features analog fully differential input, and differential output microphone amplifier designed to reduce background acoustic noise, while delivering superb speech clarity in voice communication applications.