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WM8727

24-bit 192kHz Stereo DAC

WOLFSON MICROELECTRONICS plc

www.wolfsonmicro.com

Production Data, April 2004, Rev 4.1

Copyright

2004 Wolfson Microelectronics plc

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

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.

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

•

2.7V – 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

SERIAL

INTERFACE

MUTE

BCKIN

VOUTL

VOUTR

SIGMA

DELTA

MODULATOR

LRCIN

DIN

MUTE

SIGMA

DELTA

MODULATOR

DIGITAL FILTERS

MCLK

LOW

PASS

FILTER

LOW

PASS

FILTER

RIGHT

DAC

LEFT

DAC

GND

VDD

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WM8727