WM8728_12 Datasheet, PDF (1/30 Pages) Wolfson Microelectronics plc – 24-bit, 192kHz Stereo DAC with Volume Control

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WM8728
24-bit, 192kHz Stereo DAC with
Volume Control
DESCRIPTION
The WM8728 is a high performance stereo DAC designed
for audio applications such as DVD, home theatre systems,
and digital TV. The WM8728 supports PCM data input word
lengths from 16 to 32-bits and sampling rates up to 192kHz.
The WM8728 consists of a serial interface port, digital
interpolation filters, multi-bit sigma delta modulators and
stereo DAC in a small 20-lead SSOP package. The
WM8728 also includes a digitally controllable mute and
attenuate function for each channel.
The WM8728 supports a variety of connection schemes for
audio DAC control. The 2 or 3-wire MPU serial port provides
access to a wide range of features including on-chip mute,
attenuation and phase reversal. A hardware controllable
interface is also available
The WM8728 is an ideal device to interface to AC-3™,
DTS™, and MPEG audio decoders for surround sound
applications, or for use in DVD players supporting DVD-A.
BLOCK DIAGRAM
FEATURES
• Stereo DAC with 24 bit PCM
• Audio Performance
- 106dB SNR (‘A’ weighted @ 48kHz) DAC
- -97dB THD
• DAC Sampling Frequency: 8kHz - 192kHz
• 2 or 3-Wire Serial Control Interface or Hardware Control
• Programmable Audio Data Interface Modes
- I²S, Left, Right Justified, DSP
- 16/20/24/32 bit Word Lengths
• Independent Digital Volume Control on Each Channel with
127.5dB Range in 0.5dB Steps
• 3.0V - 5.5V Supply Operation
• 20-lead SSOP Package
• Exceeds Dolby Class A Performance Requirements
APPLICATIONS
• DVD-Audio and DVD ‘Universal’ Players
• Home theatre systems
• Digital TV
• Digital broadcast receivers
WOLFSON MICROELECTRONICS plc
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Production Data, August 2008, Rev 4.6
Copyright ©2008 Wolfson Microelectronics plc