WM8973LGEFL/V Wolfson Microelectronics, WM8973LGEFL/V Datasheet - Page 3

• Manufacturer Part Number: WM8973LGEFL/V
• Description: Audio CODECs Stereo Codec with H/P Spkr
• Manufacturer: Wolfson Microelectronics

Specifications of WM8973LGEFL/V

• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: QFN-32
• Minimum Operating Temperature: - 25 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Production Data
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DESCRIPTION ....................................................................................................... 1
FEATURES ............................................................................................................ 1
APPLICATIONS ..................................................................................................... 1
BLOCK DIAGRAM ................................................................................................ 2
TABLE OF CONTENTS ......................................................................................... 3
PIN CONFIGURATION .......................................................................................... 5
ORDERING INFORMATION .................................................................................. 5
PIN DESCRIPTION ................................................................................................ 6
ABSOLUTE MAXIMUM RATINGS ........................................................................ 7
RECOMMENDED OPERATION CONDITIONS ..................................................... 7
ELECTRICAL CHARACTERISTICS ..................................................................... 8
POWER CONSUMPTION .................................................................................... 13
SIGNAL TIMING REQUIREMENTS .................................................................... 14
INTERNAL POWER ON RESET CIRCUIT .......................................................... 18
DEVICE DESCRIPTION ...................................................................................... 19
REGISTER MAP .................................................................................................. 52
DIGITAL FILTER CHARACTERISTICS .............................................................. 53
APPLICATIONS INFORMATION ........................................................................ 58
OUTPUT PGA’S LINEARITY ......................................................................................... 10
HEADPHONE OUTPUT THD VERSUS POWER .......................................................... 11
SPEAKER THD AND NOISE VERSUS POWER ........................................................... 12
SYSTEM CLOCK TIMING .............................................................................................. 14
AUDIO INTERFACE TIMING – MASTER MODE .......................................................... 14
AUDIO INTERFACE TIMING – SLAVE MODE .............................................................. 15
INTRODUCTION ............................................................................................................ 19
INPUT SIGNAL PATH .................................................................................................... 19
AUTOMATIC LEVEL CONTROL (ALC) ......................................................................... 26
OUTPUT SIGNAL PATH ................................................................................................ 30
ANALOGUE OUTPUTS ................................................................................................. 35
ENABLING THE OUTPUTS ........................................................................................... 37
HEADPHONE SWITCH.................................................................................................. 37
THERMAL SHUTDOWN ................................................................................................ 39
HEADPHONE OUTPUT ................................................................................................. 39
DIGITAL AUDIO INTERFACE ........................................................................................ 40
AUDIO INTERFACE CONTROL .................................................................................... 44
CLOCKING AND SAMPLE RATES ................................................................................ 46
CONTROL INTERFACE................................................................................................. 48
POWER SUPPLIES ....................................................................................................... 49
POWER MANAGEMENT ............................................................................................... 49
TERMINOLOGY ............................................................................................................. 53
DAC FILTER RESPONSES ........................................................................................... 54
ADC FILTER RESPONSES ........................................................................................... 55
DE-EMPHASIS FILTER RESPONSES .......................................................................... 56
HIGHPASS FILTER ....................................................................................................... 57
RECOMMENDED EXTERNAL COMPONENTS ............................................................ 58
LINE INPUT CONFIGURATION ..................................................................................... 59
MICROPHONE INPUT CONFIGURATION .................................................................... 59
MINIMISING POP NOISE AT THE ANALOGUE OUTPUTS.......................................... 59
POWER MANAGEMENT EXAMPLES ........................................................................... 60
TABLE OF CONTENTS
PD, Rev 4.5, December 2011
WM8973L
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