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WM8761
24-bit 192kHz Stereo DAC
WOLFSON MICROELECTRONICS plc
www.wolfsonmicro.com
Production Data, May 2004, Rev 4.0
Copyright
2004 Wolfson Microelectronics plc.
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
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.
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
BCKIN
AUDIO
INTERFACE
MUTE
CONTROL
INTERFACE
VOUTL
VOUTR
SIGMA
DELTA
MODULATOR
LRCIN
DIN
MUTE
SIGMA
DELTA
MODULATOR
DIGITAL FILTERS
M
D
M
F
LOW
PASS
FILTER
LOW
PASS
FILTER
CAP
DAC
DAC
G
V
W
WM8761