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24-bit 192kHz Stereo DAC
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 I
2
S, 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.
WM8726
FEATURES
•
•
Stereo DAC
Audio Performance
-
100dB SNR (‘A’ weighted @ 48kHz)
-
-88dB THD
DAC Sampling Frequency: 8kHz – 192kHz
Pin Selectable Audio Data Interface Format
-
I
2
S, 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
W
WM8726
CONTROL
INTERFACE
MUTE
BCKIN
LRCIN
DIN
MUTE
AUDIO
INTERFACE
DIGITAL
FILTERS
SIGMA
DELTA
MODULATOR
RIGHT
DAC
VOUTR
SIGMA
DELTA
MODULATOR
LEFT
DAC
VOUTL
CAP
MCLK
VDD
GND
WOLFSON MICROELECTRONICS plc
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Production Data, September 2005, Rev 4.1
Copyright
2005
Wolfson Microelectronics plc
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
