Datasheet4U Logo Datasheet4U.com

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

  • 1.
  • 2 Noise cancellation for uplink and downlink without DSP-type artifacts, distortions or delays.
  • Adapting AGC on ambient noise level & downlink signal strength for earpiece.
  • Downlink adjustable noise-reducing high pass filter.
  • E2S Class D Amplifier with ALC.
  • Ground Referenced Headphone Outputs with Advanced Click Pop Suppression.
  • Micro-power shutdown.

📥 Download Datasheet

Datasheet Details

Part number LM49155
Manufacturer Texas Instruments
File Size 779.22 KB
Description Uplink Noise Suppression & Downlink SNR Enhancement Analog Audio Subsystem
Datasheet download datasheet LM49155 Datasheet

📁 Similar Datasheet

Part Number Description Manufacturer
LM49155 Uplink Noise Suppression & Downlink SNR Enhancement Analog Audio Subsystem National Semiconductor Corporation
LM4915 Pseudo-Differential Mono Headphone Amplifier National Semiconductor
LM49150 Mono Class D Audio Subsystem National Semiconductor
LM49151 Mono Class D Audio Subsystem National Semiconductor Corporation
LM4910 Output Capacitor-less Stereo 35mW Headphone Amplifier National Semiconductor

Other Datasheets by Texas Instruments

Part Number Description
LM4915 Pseudo-Differential Mono Headphone Amplifier
LM49150 Mono Class D Audio Subsystem
LM49150TLEVAL Mono Class D Audio Subsystem
LM49151 Mono Class D Audio Subsystem
LM49153 Mono Audio Subsystem

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.

View original datasheet text
LM49155 www.ti.com SNAS492 – JULY 2010 PRODUCT BRIEF LM49155 Uplink Noise Suppression & Downlink SNR Enhancement Analog Audio Subsystem Check for Samples: LM49155 FEATURES 1 •2 Noise cancellation for uplink and downlink without DSP-type artifacts, distortions or delays • Adapting AGC on ambient noise level & downlink signal strength for earpiece • Downlink adjustable noise-reducing high pass filter • E2S Class D Amplifier with ALC • Ground Referenced Headphone Outputs with Advanced Click Pop Suppression • Micro-power shutdown APPLICATIONS • Mobile Phones • Portable Electronic Devices 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.