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WM8522  
 
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6-channel DAC with volume control
WM8522_BlockDiagram.gif
FEATURES
  • 6-Channel DAC with 1.7Vrms line driver from 5V analogue supply
  • Audio performance
  •    - SNR 102dB (‘A’ weighted @ 48kHz)
  •    - THD -85dB (48kHz)
  • DAC sampling frequency: 8kHz – 192kHz
  • 3-Wire SPI serial or hardware control interface
  • Programmable audio data interface modes
  •     - I2S, left, right justified or DSP
  •     - 16/20/24/32 bit word lengths
  • Three independent stereo DAC outputs with independent digital volume controls
  • Master or slave audio data interface
  • 4.5V to 5.5V analogue, 2.7V to 3.6V digital supply operation
  • Pin compatible with WM8766
  • 28-lead SSOP package
DESCRIPTION
The WM8522 is a multi-channel audio DAC ideal for DVD and surround sound processing applications for home hi-fi, automotive and other audio visual equipment. Three stereo 24-bit multi-bit sigma delta DACs are used with oversampling digital interpolation filters. Digital audio input word lengths from 16-32 bits and sampling rates from 8kHz to 192kHz are supported. Each DAC channel has independent digital volume and mute control, and provides 1.7Vrms line drive capability from a 5V supply. This makes the device ideal for cost-sensitive consumer applications requiring high line drive audio outputs. The audio data interface supports I2S, left justified, right justified and DSP digital audio formats.

The device is controlled via a 3 wire serial interface or directly using the hardware interface. These interfaces provide access to features including channel selection, volume controls, mutes, de-emphasis and power management facilities. The device is available in a 28-lead SSOP.

 
 
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DATA SHEET
WM8522 Rev 4.0 (402 k )

PRODUCT FLYER
WM8501/22 Product flyer

 
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