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WM9094 - Ultra Low Power Audio Subsystem

Description

The WM9094[1] is a high performance low power audio subsystem, including headphone driver and Class AB/D earpiece/speaker driver.

The Class D speaker driver supports 650mW output power at 3.6V, 1%THD.

Features

  • Mono Class D speaker driver - 2W at 5V SVDD @1%THD+N into 4Ω - 650mW at 3.6V SVDD @1%THD+N into 8Ω - 92dB SNR.
  • Ground referenced stereo headphone driver - 34mW into 16Ω load @ 1% THD+N - 96dB SNR - 80dB THD+N.
  • Mono Class AB earpiece driver - 40mW into 8Ω load.
  • Differential and single ended analogue input configurations - Compatible with ground-referenced audio sources.
  • Integrated oscillator for clocking requirements.
  • I2C 2-wire software control interface.
  • Auto.

📥 Download Datasheet

Datasheet Details

Part number WM9094
Manufacturer Wolfson Microelectronics
File Size 1.40 MB
Description Ultra Low Power Audio Subsystem
Datasheet download datasheet WM9094 Datasheet

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Full PDF Text Transcription

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w WM9094 Ultra Low Power Audio Subsystem DESCRIPTION The WM9094[1] is a high performance low power audio subsystem, including headphone driver and Class AB/D earpiece/speaker driver. The Class D speaker driver supports 650mW output power at 3.6V, 1%THD. The unique dual mode charge pump architecture provides ground referenced headphone outputs removing the requirement for external coupling capacitors. Class G technology is integrated to increase the efficiency and extend playback time by optimizing the headphone driver supply voltages according to the volume control. The flexible input configuration allows single ended or differential stereo inputs. Mixers allow highly flexible routing to the outputs. A ‘Voice Bypass’ path is also available for low-power voice applications.
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