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Wolfson Microelectronics

M8761ED Datasheet Preview

M8761ED Datasheet

24-bit 192kHz Stereo DAC

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24-bit 192kHz Stereo DAC
WM8761
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 I2S, 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 I2S, 24-bit Right Justified or DSP
2.7V - 5.5V Supply Operation
14-pin SOIC Package
Pin Compatible with WM8725 & WM8726
APPLICATIONS
DVD Players
Home Theatre Systems
Digital TV
Digital Set Top Boxes
BLOCK DIAGRAM
WOLFSON MICROELECTRONICS plc
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Production Data, October 2011, Rev 4.6
Copyright 2011 Wolfson Microelectronics plc.




Wolfson Microelectronics

M8761ED Datasheet Preview

M8761ED Datasheet

24-bit 192kHz Stereo DAC

No Preview Available !

WM8761
TABLE OF CONTENTS
Production Data
DESCRIPTION............................................................................................................ 1 
FEATURES ................................................................................................................. 1 
APPLICATIONS.......................................................................................................... 1 
BLOCK DIAGRAM ..................................................................................................... 1 
TABLE OF CONTENTS.............................................................................................. 2 
PIN CONFIGURATION ............................................................................................... 3 
ORDERING INFORMATION....................................................................................... 3 
PIN DESCRIPTION..................................................................................................... 4 
ABSOLUTE MAXIMUM RATINGS ............................................................................. 5 
DC ELECTRICAL CHARACTERISTICS .................................................................... 6 
ELECTRICAL CHARACTERISTICS .......................................................................... 6 
TERMINOLOGY ....................................................................................................................7 
MASTER CLOCK TIMING.....................................................................................................8 
DIGITAL AUDIO INTERFACE ...............................................................................................8 
POWER ON RESET (POR)...................................................................................................9 
DEVICE DESCRIPTION ........................................................................................... 11 
GENERAL INTRODUCTION ...............................................................................................11 
DAC CIRCUIT DESCRIPTION ............................................................................................11 
CLOCKING SCHEMES .......................................................................................................12 
DIGITAL AUDIO INTERFACE .............................................................................................12 
AUDIO DATA SAMPLING RATES ......................................................................................14 
HARDWARE CONTROL MODES .......................................................................................15 
DIGITAL FILTER CHARACTERISTICS ..............................................................................17 
DAC FILTER RESPONSES ................................................................................................17 
DIGITAL DE-EMPHASIS CHARACTERISTICS ....................................................... 18 
APPLICATIONS INFORMATION ............................................................................. 19 
RECOMMENDED EXTERNAL COMPONENTS .................................................................19 
RECOMMENDED EXTERNAL COMPONENTS VALUES ..................................................19 
RECOMMENDED ANALOGUE LOW PASS FILTER..........................................................20 
PCB LAYOUT RECOMMENDATIONS................................................................................20 
PACKAGE DRAWING.............................................................................................. 21 
IMPORTANT NOTICE .............................................................................................. 22 
ADDRESS: ..........................................................................................................................22 
REVISION HISTORY ................................................................................................ 23 
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PD, Rev 4.6, October 2011
2


Part Number M8761ED
Description 24-bit 192kHz Stereo DAC
Maker Wolfson Microelectronics
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