WM8731SEFL Wolfson Microelectronics, WM8731SEFL Datasheet - Page 2

• Manufacturer Part Number: WM8731SEFL
• Description: Audio CODECs Stereo Codec with H/P
• Manufacturer: Wolfson Microelectronics

Specifications of WM8731SEFL

• Number Of Adc Inputs: 1
• Number Of Dac Outputs: 1
• Conversion Rate: 96 KSPS
• Interface Type: Serial (2-Wire, 3-Wire, I2S)
• Operating Supply Voltage: - 0.3 V to + 3.63 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: QFN EP
• Minimum Operating Temperature: - 40 C
• Number Of Channels: 2 ADC/2 DAC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

WM8731 / WM8731L
DESCRIPTION .......................................................................................................1
FEATURES.............................................................................................................1
APPLICATIONS .....................................................................................................1
BLOCK DIAGRAM .................................................................................................1
PIN CONFIGURATION - 28 PIN SSOP.................................................................3
ORDERING INFORMATION ..................................................................................3
PIN CONFIGURATION – 28 PIN QFN ...................................................................4
ORDERING INFORMATION ..................................................................................4
PIN DESCRIPTION ................................................................................................5
ABSOLUTE MAXIMUM RATINGS.........................................................................6
RECOMMENDED OPERATING CONDITIONS – WM8731 ...................................6
RECOMMENDED OPERATING CONDITIONS – WM8731L.................................6
ELECTRICAL CHARACTERISTICS – WM8731 ....................................................7
POWER CONSUMPTION – WM8731 ..................................................................10
ELECTRICAL CHARACTERISTICS – WM8731L................................................11
POWER CONSUMPTION – WM8731L................................................................14
MASTER CLOCK TIMING....................................................................................15
DEVICE DESCRIPTION.......................................................................................20
DIGITAL FILTER CHARACTERISTICS ...............................................................54
DAC FILTER RESPONSES .................................................................................56
ADC FILTER RESPONSES .................................................................................57
DIGITAL DE-EMPHASIS CHARACTERISTICS ...................................................58
DIGITAL DE-EMPHASIS CHARACTERISTICS ...................................................59
APPLICATIONS INFORMATION .........................................................................60
PACKAGE DIMENSIONS - SSOP .......................................................................62
PACKAGE DIMENSIONS - QFN..........................................................................63
IMPORTANT NOTICE ..........................................................................................64
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TERMINOLOGY ............................................................................................................ 9
TERMINOLOGY .......................................................................................................... 13
DIGITAL AUDIO INTERFACE – MASTER MODE ....................................................... 16
DIGITAL AUDIO INTERFACE – SLAVE MODE .......................................................... 17
MPU INTERFACE TIMING .......................................................................................... 18
INTRODUCTION ......................................................................................................... 20
AUDIO SIGNAL PATH................................................................................................. 21
DEVICE OPERATION ................................................................................................. 34
AUDIO DATA SAMPLING RATES............................................................................... 41
ACTIVATING DSP AND DIGITAL AUDIO INTERFACE .............................................. 45
SOFTWARE CONTROL INTERFACE......................................................................... 45
POWER DOWN MODES ............................................................................................ 47
REGISTER MAP ......................................................................................................... 49
TERMINOLOGY .......................................................................................................... 55
ADC HIGH PASS FILTER ........................................................................................... 58
RECOMMENDED EXTERNAL COMPONENTS .......................................................... 60
MINIMISING POP NOISE AT THE ANALOGUE OUTPUTS........................................ 61
ADDRESS: .................................................................................................................. 64
TABLE OF CONTENTS
PD, Rev 4.8, April 2009
Production Data
2