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24-bit, 192kHz 8-Channel DAC
DESCRIPTION
The WM8768 is a multi-channel audio DAC ideal for DVD
and surround sound processing applications for home hi-fi,
automotive and other audio visual equipment.
Four 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 either 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.
WM8768
FEATURES
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•
•
•
•
8-Channel DAC with PCM.
Audio Performance
−
103dB SNR (‘A’ weighted @ 48kHz) DAC
DAC Sampling Frequency: 8kHz – 192kHz
3-Wire SPI Serial or Hardware Control Interface
Programmable Audio Data Interface Modes
−
I
2
S, Left, Right Justified or DSP
−
16/20/24/32 bit Word Lengths
Four 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 lead SSOP Package
•
•
•
•
APPLICATIONS
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•
•
DVD Players
Surround Sound AV Processors and Hi-Fi systems
Automotive Audio
BLOCK DIAGRAM
VREFN
VREFP
DVDD
DGND
AGND
VMID
AVDD
MODE
MUTE
ML/I2S
MC/IWL
MD/DM
WOLFSON MICROELECTRONICS plc
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TESTREF1
Production Data, July 2010, Rev 4.3
Copyright
©2010
Wolfson Microelectronics plc
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
