WM1811A datasheet(2/328 Pages) WOLFSON

2 / 328 page

WM1811A

Production Data

PD, November 2013, Rev 4.1

TABLE OF CONTENTS

DESCRIPTION................................................................................................................ 1

FEATURES..................................................................................................................... 1

APPLICATIONS.............................................................................................................. 1

TABLE OF CONTENTS.................................................................................................. 2

BLOCK DIAGRAM ......................................................................................................... 6

PIN CONFIGURATION ................................................................................................... 7

ORDERING INFORMATION........................................................................................... 7

PIN DESCRIPTION......................................................................................................... 8

ABSOLUTE MAXIMUM RATINGS ............................................................................... 11

RECOMMENDED OPERATING CONDITIONS............................................................ 12

ELECTRICAL CHARACTERISTICS ............................................................................ 13

INPUT SIGNAL LEVEL ............................................................................................................13

INPUT PIN RESISTANCE........................................................................................................ 14

PROGRAMMABLE GAINS....................................................................................................... 16

OUTPUT DRIVER CHARACTERISTICS ................................................................................. 17

ADC INPUT PATH PERFORMANCE....................................................................................... 18

DAC OUTPUT PATH PERFORMANCE................................................................................... 19

BYPASS PATH PERFORMANCE............................................................................................ 21

MULTI-PATH CROSSTALK ..................................................................................................... 23

DIGITAL INPUT / OUTPUT ...................................................................................................... 25

DIGITAL FILTER CHARACTERISTICS ................................................................................... 25

MICROPHONE BIAS CHARACTERISTICS............................................................................. 26

MISCELLANEOUS CHARACTERISTICS ................................................................................ 27

TERMINOLOGY....................................................................................................................... 28

TYPICAL PERFORMANCE.......................................................................................... 29

TYPICAL POWER CONSUMPTION ........................................................................................ 29

TYPICAL SIGNAL LATENCY................................................................................................... 30

SIGNAL TIMING REQUIREMENTS ............................................................................. 31

SYSTEM CLOCKS & FREQUENCY LOCKED LOOP (FLL).................................................... 31

AUDIO INTERFACE TIMING ................................................................................................... 32

DIGITAL MICROPHONE (DMIC) INTERFACE TIMING................................................................................................................32

DIGITAL AUDIO INTERFACE - MASTER MODE .........................................................................................................................33

DIGITAL AUDIO INTERFACE - SLAVE MODE.............................................................................................................................34

DIGITAL AUDIO INTERFACE - TDM MODE ................................................................................................................................35

CONTROL INTERFACE TIMING ............................................................................................. 36

DEVICE DESCRIPTION ............................................................................................... 37

INTRODUCTION...................................................................................................................... 37

ANALOGUE INPUT SIGNAL PATH ......................................................................................... 39

MICROPHONE INPUTS ................................................................................................................................................................40

MICROPHONE BIAS CONTROL ..................................................................................................................................................40

MICROPHONE ACCESSORY DETECT .......................................................................................................................................42

LINE AND VOICE CODEC INPUTS ..............................................................................................................................................42

INPUT PGA ENABLE ....................................................................................................................................................................43

INPUT PGA CONFIGURATION ....................................................................................................................................................44

INPUT PGA VOLUME CONTROL.................................................................................................................................................45

INPUT MIXER ENABLE.................................................................................................................................................................48

INPUT MIXER CONFIGURATION AND VOLUME CONTROL .....................................................................................................48

DIGITAL MICROPHONE INTERFACE .................................................................................... 52

DIGITAL PULL-UP AND PULL-DOWN..........................................................................................................................................55

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