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24-bit 192kHz Stereo DAC
DESCRIPTION
The WM8761 is a high performance stereo DAC designed
for audio applications such as DVD, home theatre systems,
and digital TV. The WM8761 supports data input word
lengths from 16 to 24-bits and sampling rates up to 192kHz.
The WM8761 consists of a serial interface port, digital
interpolation filters, multi-bit sigma delta modulators and
stereo DAC in a 14-pin SOIC package.
The WM8761 has a hardware control interface for selection
of audio data interface format, mute and de-emphasis. The
WM8761 supports I
2
S, right justified or DSP interfaces.
The WM8761 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.
WM8761
FEATURES
•
•
Stereo DAC
Audio Performance
-
100dB SNR (‘A’ weighted @ 48kHz)
-
-90dB THD
DAC Sampling Frequency: 8kHz – 192kHz
Pin Selectable Audio Data Interface Format
-
16 to 24-bit I
2
S, 24-bit Right Justified or DSP
2.7V - 5.5V Supply Operation
14-pin SOIC Package
Pin Compatible with WM8725
•
•
•
•
•
APPLICATIONS
•
•
•
•
DVD Players
Home Theatre Systems
Digital TV
Digital Set Top Boxes
BLOCK DIAGRAM
DEEMPH
FORMAT
MUTE
CONTROL
INTERFACE
W
WM8761
MUTE
BCKIN
LRCIN
DIN
AUDIO
INTERFACE
MUTE
DIGITAL FILTERS
SIGMA
DELTA
MODULATOR
DAC
LOW
PASS
FILTER
VOUTR
SIGMA
DELTA
MODULATOR
DAC
LOW
PASS
FILTER
VOUTL
CAP
MCLK
WOLFSON MICROELECTRONICS plc
www.wolfsonmicro.com
Production Data, May 2004, Rev 4.0
Copyright
2004
Wolfson Microelectronics plc.
GND
VDD
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
