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LM49200 - Stereo Class AB Audio Subsystem

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General Description

The LM49200 is a fully integrated audio subsystem with a stereo power amplifier capable of delivering 500mW of continuous average power per channel into 8Ω with 1% THD+N using a 3.3V supply.

The LM49200 includes a separate stereo headphone amplifier that can deliver 35mW per channel into 32Ω.

The LM49200 has three input channels.

Overview

LM49200, LM49200TLEVAL www.ti.com SNAS459A – MAY 2009 – REVISED APRIL 2013 LM49200 Stereo Class AB Audio Subsystem with a True Ground Headphone Amplifier Check for Samples: LM49200,.

Key Features

  • 1.
  • 2 Differential Mono Input and Stereo SingleEnded Input.
  • 32-Step Digital Volume Control (-80 to +18dB).
  • Three Independent Volume Channels (Left, Right, Mono).
  • Separate Headphone Volume Control.
  • Flexible Output for Speaker and Headphone Output.
  • True Ground Headphone Amplifier Eliminates Large DC Blocking Capacitors Reducing PCB Space and Cost.
  • Receiver Pass-Through Capability.
  • Soft Enable Function.
  • RF Immunity Topol.

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