w
24-bit 192kHz Stereo DAC
DESCRIPTION
The WM8727 is a high performance stereo DAC designed
for audio applications such as DVD, home theatre systems,
and digital TV. The WM8727 supports data input word
lengths from 16 to 24-bits and sampling rates up to 192kHz.
The WM8727 consists of a serial interface port, digital
interpolation filters, multi-bit sigma delta modulators and
stereo DAC in a very small 8-pin SOIC package.
The WM8727 supports a 16-24-bit I
2
S digital audio
interface.
The WM8727 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.
WM8727
FEATURES
•
•
Stereo DAC
Audio Performance
-
98dB SNR (‘A’ weighted @ 48kHz) DAC
-
-84dB THD
DAC Sampling Frequency: 8kHz – 192kHz
Audio Data Interface Format
-
16-24-Bit I
2
S
2.7V – 5.5V Supply Operation
8-pin SOIC Package
Exceeds Dolby Class A Performance Requirements
•
•
•
•
•
APPLICATIONS
•
•
•
DVD Players
Digital TV
Digital Set Top Box
BLOCK DIAGRAM
MUTE
BCKIN
LRCIN
DIN
MUTE
SERIAL
INTERFACE
DIGITAL FILTERS
SIGMA
DELTA
MODULATOR
RIGHT
DAC
LOW
PASS
FILTER
VOUTR
SIGMA
DELTA
MODULATOR
LEFT
DAC
LOW
PASS
FILTER
VOUTL
W
WM8727
MCLK
VDD
GND
WOLFSON MICROELECTRONICS plc
www.wolfsonmicro.com
Production Data, April 2004, Rev 4.1
Copyright
2004
Wolfson Microelectronics plc
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
