WM8766
24-bit, 192kHz 6-Channel DAC
DESCRIPTION
The WM8766 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.
The audio data interface supports I
2
S, 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-pin
SSOP.
FEATURES
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6-Channel DAC
Audio Performance
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103dB SNR (‘A’ weighted @ 48kHz) DAC
DAC Sampling Frequency: 8kHz – 192kHz
3-Wire SPI Serial or Hardware Control Interface
Programmable Audio Data Interface Modes
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I
2
S, Left, Right Justified or DSP
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16/20/24/32 bit Word Lengths
Three Independent stereo DAC outputs with independent
digital volume controls
Master or Slave Audio Data Interface
2.7V to 5.5V Analogue, 2.7V to 3.6V Digital supply
Operation
28 pin SSOP Package
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APPLICATIONS
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DVD Players
Surround Sound AV Processors and Hi-Fi systems
Automotive Audio
BLOCK DIAGRAM
WOLFSON MICROELECTRONICS plc
www.wolfsonmicro.com
Preliminary Technical Data, February 2004, 2.3
Copyright
2004
Wolfson Microelectronics plc
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
