CDBWM8973L-M-1

CDBWM8973L-M-1 Datasheet

Part	Datasheet
CDBWM8973L-M-1	CDBWM8973L-M-1 (pdf)

Related Parts	Information
WM8973CLGEFL/V	WM8973CLGEFL/V
WM8973CLGEFL/RV	WM8973CLGEFL/RV

PDF Datasheet Preview
WM8973L Stereo CODEC for Portable Audio Applications The WM8973L is a low power, high quality stereo CODEC designed for portable digital audio applications. The device integrates complete interfaces to stereo or mono microphones and a stereo headphone. External component requirements are drastically reduced as no separate microphone or headphone amplifiers are required. Advanced on-chip digital signal processing performs graphic equaliser, 3-D sound enhancement and automatic level control for the microphone or line input. The WM8973L can operate as a master or a slave, with various master clock frequencies including 12 or 24MHz for USB devices, or standard 256fs rates like 12.288MHz and 24.576MHz. Different audio sample rates such as 96kHz, 48kHz, 44.1kHz are generated directly from the master clock without the need for an external PLL. The WM8973L operates at supply voltages down to 1.8V, although the digital core can operate at voltages down to 1.42V to save power, and the maximum for all supplies is Volts. Different sections of the chip can also be powered down under software control. The WM8973L is supplied in a very small and thin 5x5mm QFN package, ideal for use in hand-held and portable systems. • DAC SNR 98dB ‘A’ weighted , THD at 48kHz, 3.3V • ADC SNR 95dB ‘A’ weighted , THD -82dB at 48kHz, 3.3V • Complete Stereo / Mono Microphone Interface - Programmable ALC / Noise Gate • On-chip 400mW BTL Speaker Driver mono • On-chip Headphone Driver - >40mW output power on / 3.3V - THD at 20mW, SNR 90dB with load - No DC blocking capacitors required capless mode • Separately mixed mono output • Digital Graphic Equaliser • Low Power - 7mW stereo playback 1.8V / 1.5V supplies - 14mW record & playback 1.8V / 1.5V supplies • Low Supply Voltages - Analogue 1.8V to 3.6V - Digital core 1.42V to 3.6V - Digital I/O 1.8V to 3.6V • 256fs / 384fs or USB master clock rates 12MHz, 24MHz • Audio sample rates 8, 16, 24, 32, 48, 96kHz generated internally from master clock • 5x5x0.9mm QFN package • MP3 Player / Recorder • AAC/WMA/Multi-Format Player / Recorder • Minidisc Player / Recorder • Portable Digital Music Systems WOLFSON MICROELECTRONICS plc To receive regular email updates, sign up at WM8973L BLOCK DIAGRAM Production Data Production Data WM8973L TABLE OF CONTENTS 1 FEATURES 1 BLOCK DIAGRAM 2 TABLE OF 3 PIN CONFIGURATION 5 ORDERING 5 PIN 6 ABSOLUTE MAXIMUM RATINGS 7 RECOMMENDED OPERATION 7 ELECTRICAL CHARACTERISTICS 8 OUTPUT PGA’S LINEARITY 10 HEADPHONE OUTPUT THD VERSUS POWER 11 SPEAKER THD AND NOISE VERSUS POWER 12 POWER CONSUMPTION 13 SIGNAL TIMING REQUIREMENTS 14 SYSTEM CLOCK 14 AUDIO INTERFACE TIMING MASTER MODE 14 AUDIO INTERFACE TIMING SLAVE MODE 15 INTERNAL POWER ON RESET CIRCUIT 18 DEVICE DESCRIPTION 19 INTRODUCTION 19 INPUT SIGNAL PATH 19 AUTOMATIC LEVEL CONTROL ALC 26 OUTPUT SIGNAL PATH 30 ANALOGUE OUTPUTS 35 ENABLING THE OUTPUTS 37 HEADPHONE 37 THERMAL SHUTDOWN 39 HEADPHONE OUTPUT 39 DIGITAL AUDIO 40 AUDIO INTERFACE CONTROL 44 CLOCKING AND SAMPLE 46 CONTROL 48 POWER SUPPLIES 49 POWER MANAGEMENT 49 REGISTER MAP 52 DIGITAL FILTER CHARACTERISTICS 53 TERMINOLOGY 53 DAC FILTER RESPONSES 54 ADC FILTER RESPONSES 55 DE-EMPHASIS FILTER RESPONSES 56 HIGHPASS FILTER 57 APPLICATIONS INFORMATION 58 RECOMMENDED EXTERNAL COMPONENTS 58 LINE INPUT 59 MICROPHONE INPUT CONFIGURATION 59 MINIMISING POP NOISE AT THE ANALOGUE 59 POWER MANAGEMENT EXAMPLES 60 WM8973L Production Data IMPORTANT NOTICE 62 ADDRESS 62 Production Data PIN CONFIGURATION WM8973L ORDERING INFORMATION ORDER CODE WM8973CLGEFL/V WM8973CLGEFL/RV Note Reel quantity = 3500 TEMPERATURE RANGE -25C to +85C -25C to +85C PACKAGE 32-lead QFN 5x5x0.9mm Pb-free 32-lead QFN 5x5x0.9mm Pb-free, tape and reel MOISTURE PEAK SOLDERING SENSITIVITY LEVEL TEMPERATURE MSL3 260oC MSL3 260oC WM8973L PIN DESCRIPTION Production Data PIN NO NAME TYPE MCLK Digital Input Master Clock DCVDD Supply Digital Core Supply DBVDD Supply Digital Buffer I/O Supply DGND Supply Digital Ground return path for both DCVDD and DBVDD BCLK Digital Input / Output Audio Interface Bit Clock DACDAT Digital Input DAC Digital Audio Data DACLRC Digital Input / Output Audio Interface Left / Right Clock/Clock Out The Moisture Sensitivity Level for each package type is specified in Ordering Information. CONDITION Supply voltages -0.3V Voltage range digital inputs Voltage range analogue inputs Operating temperature range, TA Storage temperature after soldering DGND -0.3V AGND -0.3V -25C -65C Notes Analogue and digital grounds must always be within 0.3V of each other. All digital and analogue supplies are completely independent from each other. DCVDD must be less than or equal to AVDD and DBVDD. MAX +3.63V DBVDD +0.3V AVDD +0.3V +85C +150C RECOMMENDED OPERATION CONDITIONS PARAMETER Digital supply range Core Digital supply range Buffer Analogue supplies range Ground UNIT DCVDD DBVDD AVDD, HPVDD DGND,AGND, HPGND WM8973L Production Data ELECTRICAL CHARACTERISTICS Test Conditions DCVDD = 1.5V, DBVDD = 3.3V, AVDD = HPVDD = 3.3V, TA = +25oC, 1kHz signal, fs = 48kHz, PGA gain = 0dB, 24-bit audio data unless otherwise stated. PARAMETER SYMBOL TEST CONDITIONS Analogue Inputs LINPUT1, RINPUT1, LINPUT2, RINPUT2, LINPUT3, RINPUT3 to ADC out Full Scale Input Signal Level for ADC 0dB Input at 0dB Gain VINFS AVDD = 3.3V AVDD = 1.8V Input Resistance L/RINPUT1 to ADC, PGA gain = 0dB L/RINPUT1 to ADC, PGA gain = +30dB L/RINPUT1 unused DC Measurement UNIT V rms L/RINPUT1 unused Input Capacitance Signal to Noise Ratio AVDD = 3.3V

PDF Datasheet Preview

WM8973L

Stereo CODEC for Portable Audio Applications

The WM8973L is a low power, high quality stereo CODEC designed for portable digital audio applications.

The device integrates complete interfaces to stereo or mono microphones and a stereo headphone. External component requirements are drastically reduced as no separate microphone or headphone amplifiers are required. Advanced on-chip digital signal processing performs graphic equaliser, 3-D sound enhancement and automatic level control for the microphone or line input.

The WM8973L can operate as a master or a slave, with various master clock frequencies including 12 or 24MHz for USB devices, or standard 256fs rates like 12.288MHz and 24.576MHz. Different audio sample rates such as 96kHz, 48kHz, 44.1kHz are generated directly from the master clock without the need for an external PLL.

The WM8973L operates at supply voltages down to 1.8V, although the digital core can operate at voltages down to 1.42V to save power, and the maximum for all supplies is Volts. Different sections of the chip can also be powered down under software control.

The WM8973L is supplied in a very small and thin 5x5mm QFN package, ideal for use in hand-held and portable systems.
• DAC SNR 98dB ‘A’ weighted , THD at 48kHz, 3.3V
• ADC SNR 95dB ‘A’ weighted , THD -82dB at 48kHz, 3.3V
• Complete Stereo / Mono Microphone Interface
- Programmable ALC / Noise Gate
• On-chip 400mW BTL Speaker Driver mono
• On-chip Headphone Driver
- >40mW output power on / 3.3V - THD at 20mW, SNR 90dB with load - No DC blocking capacitors required capless mode
• Separately mixed mono output
• Digital Graphic Equaliser
• Low Power - 7mW stereo playback 1.8V / 1.5V supplies - 14mW record & playback 1.8V / 1.5V supplies
• Low Supply Voltages - Analogue 1.8V to 3.6V - Digital core 1.42V to 3.6V - Digital I/O 1.8V to 3.6V
• 256fs / 384fs or USB master clock rates 12MHz, 24MHz
• Audio sample rates 8, 16, 24, 32, 48, 96kHz generated internally from master clock
• 5x5x0.9mm QFN package
• MP3 Player / Recorder
• AAC/WMA/Multi-Format Player / Recorder
• Minidisc Player / Recorder
• Portable Digital Music Systems

WOLFSON MICROELECTRONICS plc To receive regular email updates, sign up at

WM8973L BLOCK DIAGRAM

Production Data

Production Data

WM8973L

TABLE OF CONTENTS
1 FEATURES 1 BLOCK DIAGRAM 2 TABLE OF 3 PIN CONFIGURATION 5 ORDERING 5 PIN 6 ABSOLUTE MAXIMUM RATINGS 7 RECOMMENDED OPERATION 7 ELECTRICAL CHARACTERISTICS 8

OUTPUT PGA’S LINEARITY 10 HEADPHONE OUTPUT THD VERSUS POWER 11 SPEAKER THD AND NOISE VERSUS POWER 12 POWER CONSUMPTION 13 SIGNAL TIMING REQUIREMENTS 14 SYSTEM CLOCK 14 AUDIO INTERFACE TIMING MASTER MODE 14 AUDIO INTERFACE TIMING SLAVE MODE 15 INTERNAL POWER ON RESET CIRCUIT 18 DEVICE DESCRIPTION 19 INTRODUCTION 19 INPUT SIGNAL PATH 19 AUTOMATIC LEVEL CONTROL ALC 26 OUTPUT SIGNAL PATH 30 ANALOGUE OUTPUTS 35 ENABLING THE OUTPUTS 37 HEADPHONE 37 THERMAL SHUTDOWN 39 HEADPHONE OUTPUT 39 DIGITAL AUDIO 40 AUDIO INTERFACE CONTROL 44 CLOCKING AND SAMPLE 46 CONTROL 48 POWER SUPPLIES 49 POWER MANAGEMENT 49 REGISTER MAP 52 DIGITAL FILTER CHARACTERISTICS 53 TERMINOLOGY 53 DAC FILTER RESPONSES 54 ADC FILTER RESPONSES 55 DE-EMPHASIS FILTER RESPONSES 56 HIGHPASS FILTER 57 APPLICATIONS INFORMATION 58 RECOMMENDED EXTERNAL COMPONENTS 58 LINE INPUT 59 MICROPHONE INPUT CONFIGURATION 59 MINIMISING POP NOISE AT THE ANALOGUE 59 POWER MANAGEMENT EXAMPLES 60

WM8973L

Production Data

IMPORTANT NOTICE 62 ADDRESS 62

Production Data

PIN CONFIGURATION

WM8973L
ORDERING INFORMATION

ORDER CODE WM8973CLGEFL/V WM8973CLGEFL/RV Note Reel quantity = 3500

TEMPERATURE RANGE
-25C to +85C
-25C to +85C

PACKAGE
32-lead QFN 5x5x0.9mm Pb-free
32-lead QFN 5x5x0.9mm Pb-free, tape and reel

MOISTURE

PEAK SOLDERING

SENSITIVITY LEVEL TEMPERATURE

MSL3
260oC

MSL3
260oC

WM8973L PIN DESCRIPTION

Production Data

PIN NO

NAME

TYPE

MCLK

Digital Input

Master Clock

DCVDD

Supply

Digital Core Supply

DBVDD

Supply

Digital Buffer I/O Supply

DGND

Supply

Digital Ground return path for both DCVDD and DBVDD

BCLK

Digital Input / Output

Audio Interface Bit Clock

DACDAT

Digital Input

DAC Digital Audio Data

DACLRC

Digital Input / Output

Audio Interface Left / Right Clock/Clock Out
The Moisture Sensitivity Level for each package type is specified in Ordering Information.

CONDITION

Supply voltages
-0.3V

Voltage range digital inputs Voltage range analogue inputs Operating temperature range, TA Storage temperature after soldering

DGND -0.3V AGND -0.3V
-25C -65C

Notes

Analogue and digital grounds must always be within 0.3V of each other.

All digital and analogue supplies are completely independent from each other.

DCVDD must be less than or equal to AVDD and DBVDD.

MAX +3.63V DBVDD +0.3V AVDD +0.3V +85C +150C

RECOMMENDED OPERATION CONDITIONS

PARAMETER Digital supply range Core Digital supply range Buffer Analogue supplies range Ground

UNIT

DCVDD

DBVDD

AVDD, HPVDD

DGND,AGND, HPGND

WM8973L

Production Data

ELECTRICAL CHARACTERISTICS

Test Conditions DCVDD = 1.5V, DBVDD = 3.3V, AVDD = HPVDD = 3.3V, TA = +25oC, 1kHz signal, fs = 48kHz, PGA gain = 0dB, 24-bit audio data unless otherwise stated.

PARAMETER

SYMBOL TEST CONDITIONS

Analogue Inputs LINPUT1, RINPUT1, LINPUT2, RINPUT2, LINPUT3, RINPUT3 to ADC out

Full Scale Input Signal Level for ADC 0dB Input at 0dB Gain

VINFS

AVDD = 3.3V AVDD = 1.8V

Input Resistance

L/RINPUT1 to ADC,

PGA gain = 0dB

L/RINPUT1 to ADC,

PGA gain = +30dB

L/RINPUT1 unused

DC Measurement

UNIT V rms

L/RINPUT1 unused

Input Capacitance

Signal to Noise Ratio

AVDD = 3.3V

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Datasheet ID: CDBWM8973L-M-1 523283