Stereo Codec with Volume Control

The WM8569 is a stereo audio codec ideal for DVD, PVR, LCD-TV and automotive applications. Independent ADC and DAC clocking permits separate record and playback sampling rates. A stereo 24-bit multi-bit Delta Sigma DAC with oversampling and digital interpolation filters provides the output signal. Digital audio input word lengths from 16-24 bits and sampling rates from 8 kHz to 192 kHz are supported. A stereo 24-bit multi-bit Delta Sigma ADC is used. Digital audio output word lengths from 16-24 bits and sampling rates from 32 kHz to 96 kHz are supported. The DAC and ADC support independent sampling rates. The audio data interface supports I²S, left justified, right justified and DSP digital audio formats. The device is controlled via a three-wire serial interface. The interface provides access to all features including volume controls, mutes, de-emphasis and power management facilities. A hardware control interface allows access to a limited feature set. The WM8569 is available in a 28-lead SSOP.

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Technology

Mono/Stereo Codecs

Features

  • audio performance
  • 103 dB SNR (’A’ weighted @ 48 kHz) DAC
  • DAC sampling frequency: 8 kHz - 192 kHz
  • 100 dB SNR (’A’ weighted @ 48 kHz) ADC
  • ADC sampling frequency: 32 kHz - 96 kHz
  • independent sampling rates for ADC and DAC
  • three-wire SPI serial or hardware control interface
  • audio mute and de-emphasis functions
  • programmable audio data interface modes
  • 16/20/24/32 bit word lengths
  • I²S, left, right justified or DSP
  • 2.7V to 5.5V analog supply
  • 2.7V to 3.6V digital supply
  • 28-lead SSOP package

Parametric Specifications

Not Recommended for New Designs
Recommended Replacement: CS4270

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