WM8731 Wolfson Microelectronics Ltd., WM8731 Datasheet - Page 2

• Manufacturer Part Number: WM8731
• Description: WM8731 : Low Power Audio Codec With Integrated Headphone Driver
• Manufacturer: Wolfson Microelectronics Ltd.

WM8731
DESCRIPTION ....................................................................................................... 1
FEATURES ............................................................................................................ 1
APPLICATIONS ..................................................................................................... 1
BLOCK DIAGRAM................................................................................................. 1
PIN CONFIGURATION .......................................................................................... 6
ORDERING INFORMATION .................................................................................. 6
PIN DESCRIPTION ................................................................................................ 7
ABSOLUTE MAXIMUM RATINGS......................................................................... 8
RECOMMENDED OPERATING CONDITIONS ..................................................... 8
ELECTRICAL CHARACTERISTICS ...................................................................... 9
TERMINOLOGY................................................................................................... 11
POWER CONSUMPTION .................................................................................... 12
MASTER CLOCK TIMING ................................................................................... 13
DEVICE DESCRIPTION....................................................................................... 18
DIGITAL AUDIO INTERFACE – MASTER MODE
DIGITAL AUDIO INTERFACE – SLAVE MODE
MPU INTERFACE TIMING
INTRODUCTION
AUDIO SIGNAL PATH
LINE INPUTS .......................................................................................................................................... 19
MICROPHONE INPUT ............................................................................................................................ 21
MICROPHONE BIAS .............................................................................................................................. 22
ADC......................................................................................................................................................... 23
ADC FILTERS......................................................................................................................................... 24
DAC FILTERS......................................................................................................................................... 24
DAC......................................................................................................................................................... 25
LINE OUTPUTS ...................................................................................................................................... 26
HEADPHONE AMPLIFIER ..................................................................................................................... 27
BYPASS MODE ...................................................................................................................................... 29
SIDETONE MODE .................................................................................................................................. 30
TABLE OF CONTENTS
AI Rev 2.3 August 2001
Advanced Information
14
15
16
18
19
2