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WM8903 - Ultra Low Power CODEC

General Description

The WM8903 is a high performance ultra-low power stereo CODEC optimised for portable audio applications.

Key Features

  • stereo ground-referenced headphone amplifiers using the Wolfson ‘Class W’ amplifier techniques incorporating an innovative dual-mode charge pump architecture - to optimise efficiency and power consumption during playback. The ground-referenced outputs eliminate headphone coupling capacitors. Both headphone and line outputs include common mode feedback paths to reject ground noise. Control sequences for audio path setup can be pre-loaded and executed by an integrated sequencer to reduce software.

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Datasheet Details

Part number WM8903
Manufacturer Wolfson Microelectronics
File Size 1.38 MB
Description Ultra Low Power CODEC
Datasheet download datasheet WM8903 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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w WM8903 Ultra Low Power CODEC for Portable Audio Applications DESCRIPTION The WM8903 is a high performance ultra-low power stereo CODEC optimised for portable audio applications. The device features stereo ground-referenced headphone amplifiers using the Wolfson ‘Class W’ amplifier techniques incorporating an innovative dual-mode charge pump architecture - to optimise efficiency and power consumption during playback. The ground-referenced outputs eliminate headphone coupling capacitors. Both headphone and line outputs include common mode feedback paths to reject ground noise. Control sequences for audio path setup can be pre-loaded and executed by an integrated sequencer to reduce software driver development and eliminate pops and clicks via Wolfson’s SilentSwitch™ technology.