WM8726 Datasheet, PDF (1/20 Pages) Wolfson Microelectronics plc – 24-bit 192kHz Stereo DAC

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24-bit 192kHz Stereo DAC
WM8726
DESCRIPTION
The WM8726 is a high performance stereo DAC designed
for audio applications such as DVD, home theatre systems,
and digital TV. The WM8726 supports data input word
lengths from 16 to 24-bits and sampling rates up to 192kHz.
The WM8726 consists of a serial interface port, digital
interpolation filters, multi-bit sigma delta modulators and
stereo DAC in a 14-lead SOIC package.
The WM8726 has a hardware control interface for selection
of audio data interface format, mute and de-emphasis. The
WM8726 supports I²S, right Justified or DSP interfaces.
The WM8726 is an ideal device to interface to AC-3,
DTS, and MPEG audio decoders for surround sound
applications, or for use in DVD players, including supporting
the implementation of 2 channels at 192kHz for high-end
DVD-Audio applications.
FEATURES
• Stereo DAC
• Audio Performance
- 100dB SNR (‘A’ weighted @ 48kHz)
- -88dB THD
• DAC Sampling Frequency: 8kHz – 192kHz
• Pin Selectable Audio Data Interface Format
- I²S, 16-bit Right Justified or DSP
• 2.7V - 5.5V Supply Operation
• 14-lead SOIC Package
• Pin Compatible with WM8725
APPLICATIONS
• DVD Players
• Home Theatre Systems
• Digital TV
• Digital Set Top Boxes
BLOCK DIAGRAM
FORMAT MUTE DEEMPH
CONTROL
INTERFACE
W
WM8726
BCKIN
LRCIN
DIN
AUDIO
INTERFACE
MUTE
MUTE
DIGITAL
FILTERS
SIGMA
DELTA
MODULATOR
RIGHT
DAC
SIGMA
DELTA
MODULATOR
LEFT
DAC
VOUTR
VOUTL
MCLK
WOLFSON MICROELECTRONICS plc
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CAP
VDD GND
Production Data, September 2005, Rev 4.1
Copyright 2005 Wolfson Microelectronics plc