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WM8974 - Mono CODEC

General Description

The WM8974 is a low power, high quality mono CODEC designed for portable applications such as Digital Still Camera or Digital Voice Recorder.

The device integrates support for a differential or single ended mic, and includes drivers for speakers or headphone, and mono line output.

Key Features

  • Mono CODEC:.
  • Audio sample rates:8, 11.025, 16, 22.05, 24, 32, 44.1, 48kHz.
  • DAC SNR 98dB, THD -84dB (‘A’-weighted @ 8.
  • 48ks/s).
  • ADC SNR 94dB, THD -83dB (‘A’-weighted @ 8.
  • 48ks/s).
  • On-chip Headphone/Speaker Driver with ‘cap-less’ connect - 40mW output power into 16 / 3.3V SPKVDD - BTL speaker drive 0.9W into 8 / 5V SPKVDD.
  • Additional MONO Line output.
  • Multiple analogue or ‘Aux’ inputs, plus analogue bypass path Mic Preamps:.
  • Differential or s.

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Full PDF Text Transcription (Reference)

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WM8974 Mono CODEC with Speaker Driver DESCRIPTION The WM8974 is a low power, high quality mono CODEC designed for portable applications such as Digital Still Camera or Digital Voice Recorder. The device integrates support for a differential or single ended mic, and includes drivers for speakers or headphone, and mono line output. External component requirements are reduced as no separate microphone or headphone amplifiers are required. Advanced Sigma Delta Converters are used along with digital decimation and interpolation filters to give high quality audio at sample rates from 8 to 48ks/s.