WM9001GEFL

WM9001GEFL Datasheet

WM9001

Part	Datasheet
WM9001GEFL	WM9001GEFL (pdf)

Related Parts	Information
WM9001GEFL/R	WM9001GEFL/R

PDF Datasheet Preview
WM9001 1W Dual-Mode Class AB/D Speaker Driver The WM9001 is a powerful, high quality speaker driver which can operate in class D or AB mode, providing total flexibility to the system designer. Low leakage, high PSRR and pop/click suppression enable direct battery connection to the speaker supply. RF noise suppression techniques and differential design are used to suppress undesired noise. A single-ended input option has been included for complete system flexibility. The device is enabled by setting a logic '1' on the EN pin. The class D clock can be generated by an internal oscillator, or supplied from an external clock source. Flexible speaker boost options requiring no additional components allow output volume to be maximised for various SPKVDD/AVDD combinations while minimising internal power consumption. The WM9001 is available in a 3x3mm QFN package, ideal for portable systems such as mobile phones, portable navigation devices, media players, laptop computers and electronic dictionaries. • Class D and AB speaker driver modes for flexibility • Speaker driver provides 1W into at THD • SNR 102dB Class AB , 97dB Class D • Differential and single-ended input modes • >80dB PSRR 217Hz SPKVDD • <1uA typical leakage with direct battery connection • Filterless speaker connection • Fully differential architecture differential mode • Pop/click suppression • RF noise suppression • Fully compatible with Wolfson CODECs including WM8990 / WM8991 • Internal oscillator or external clock source • Thermal shutdown protection • 3x3mm QFN package • Mobile phones • Portable navigation devices • Portable media players • Laptop computers and portable gaming devices • Electronic dictionaries • General-purpose high quality speaker amplifier BLOCK DIAGRAM WOLFSON MICROELECTRONICS plc To receive regular email updates, sign up at Production Data, March 2010, Rev Copyright 2010 Wolfson Microelectronics plc WM9001 TABLE OF CONTENTS Production Data APPLICATIONS BLOCK DIAGRAM TABLE OF CONTENTS ORDERING INFORMATION PIN DESCRIPTION ABSOLUTE MAXIMUM RECOMMENDED OPERATING CONDITIONS THERMAL PERFORMANCE POWER DE-RATING ELECTRICAL CHARACTERISTICS 9 TYPICAL POWER CONSUMPTION SPEAKER DRIVER PERFORMANCE CLASS D MODE 11 CLASS AB MODE 11 PSRR EFFICIENCY AUDIO SIGNAL DEVICE DESCRIPTION 15 POWER ON RESET 15 ENABLE 15 INPUT SIGNAL 16 SYNC 16 SPEAKER DRIVER MODE 17 SIGNAL BOOST CONTROL 17 THERMAL SHUTDOWN 18 RF NOISE 18 POPS / CLICK SUPPRESSION 18 APPLICATIONS INFORMATION TYPICAL STAND-ALONE 19 TYPICAL USAGE WITH WM8991 CODEC 20 SPEAKER SELECTION 21 PCB LAYOUT 22 RECOMMENDED EXTERNAL 23 PACKAGE DIMENSIONS IMPORTANT NOTICE 25 Production Data PIN CONFIGURATION The WM9001 is supplied in a 3mm x 3mm 16 pin QFN package WM9001 ORDERING INFORMATION DEVICE QFN WM9001GEFL QFN WM9001GEFL/R MINIMUM ORDER QUANTITY TEMPERATURE RANGE -40°C to 85°C 3500 -40°C to 85°C PACKAGE QFN MOISTURE SENSITIVITY LEVEL MSL 1 PEAK SOLDERING TEMPERATURE 260°C MSL 1 260°C WM9001 PIN DESCRIPTION PIN NO 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 NAME INP_SEL LIP EN LIN BSEL2 BSEL1 BSEL0 VMID AVDD CDMODE AGND SYNC VOUTN SPKGND SPKVDD VOUTP TYPE Digital Input Analogue Input Enable Analogue Input Digital Input Digital Input Digital Input Analogue Output Supply Digital In Supply Digital Input Analogue Output Supply Analogue Output Production Data DESCRIPTION Audio Input Mode Select Positive differential input Device Enable input Negative differential input Signal Boost Control[2] Signal Boost Control[1] Signal Boost Control[0] Midrail voltage decoupling capacitor Analogue supply Class AB/D Mode select Analogue supply ground Class D clock input Speaker negative output Speaker driver supply ground Speaker driver supply Speaker positive output Production Data WM9001 ABSOLUTE MAXIMUM RATINGS Absolute Maximum Ratings are stress ratings only. Permanent damage to the device may be caused by continuously operating at or beyond these limits. Device functional operating limits and guaranteed performance specifications are given under Electrical Characteristics at the test conditions specified. ESD Sensitive Device. This device is manufactured on a CMOS process. It is therefore generically susceptible to damage from excessive static voltages. Proper ESD precautions must be taken during handling and storage of this device. Wolfson tests its package types according to IPC/JEDEC J-STD-020B for Moisture Sensitivity to determine acceptable storage conditions prior to surface mount assembly. These levels are: MSL1 = unlimited floor life at <30°C / 85% Relative Humidity. Not normally stored in moisture barrier bag. MSL2 = out of bag storage for 1 year at <30°C / 60% Relative Humidity. Supplied in moisture barrier bag. MSL3 = out of bag storage for 168 hours at <30°C / 60% Relative Humidity. Supplied in moisture barrier bag. The Moisture Sensitivity Level for each package type is specified in Ordering Information. CONDITION AVDD SPKVDD Digital Inputs voltage range Analogue Inputs voltage range Operating temperature range, TA Junction temperature, TJ Storage temperature after soldering MIN -0.3V -0.3V AGND -0.3V AGND -0.3V -40ºC -40ºC -65ºC MAX +4.5V +7V AVDD +0.3V AVDD +0.3V +85ºC +150ºC +150ºC RECOMMENDED OPERATING CONDITIONS PARAMETER Analogue supply Speaker supply Ground SYMBOL AVDD SPKVDD AGND, SPKGND UNIT Analogue and speaker grounds must always be within 0.3V of each other. All supplies are completely independent from each other i.e. not internally connected . AVDD must be less than or equal to SPKVDD. SPKVDD must be high enough to support the peak output voltage when using DCGAIN and ACGAIN functions, to avoid output waveform clipping. Peak output voltage is AVDD* DCGAIN+ACGAIN /2. The EN and SYNC pins are compatible with low voltage eg. 1.8v logic levels from external devices, and can accept logic 1 digital inputs as low as 1.6V, even though the WM9001 AVDD supply minimum is 2.7V. This provides compatibility with a low voltage DVDD on a controlling device such as the WM8991 CODEC. WM9001 Production Data THERMAL PERFORMANCE Thermal analysis should be performed in the intended application to prevent the WM9001 from exceeding maximum junction temperature. Several contributing factors affect thermal performance most notably the physical properties of the mechanical enclosure, location of the device on the PCB in relation to surrounding components and the number of PCB layers. Connecting the GND pins/paddle through thermal vias and into a large ground plane will aid heat extraction. Three main heat transfer paths exist to surrounding air: - Package top to air radiation . - Package bottom to PCB radiation . - Package pins/paddle/balls to PCB conduction . The temperature rise TR is given by TR = PD * - PD is the power dissipated in the device. - is the thermal resistance from the junction of the die to the ambient temperature and is therefore a measure of heat transfer from the die to surrounding air. is determined with reference to JEDEC standard JESD51-9. The junction temperature TJ is given by TJ = TA +TR, where TA is the ambient temperature. PARAMETER Operating temperature range Operating junction temperature Thermal Resistance SYMBOL TA TJ UNIT °C/W Production Data WM9001 POWER DE-RATING The speaker driver has been designed to drive a maximum of 1W into 8Ω with a 5V supply. However, thermal restrictions defined by the package limit the amount of power that can be safely dissipated in the device without exceeding the maximum operating junction temperature. Power dissipated in the device correlates directly with speaker efficiency, hence there are separate de-rating curves for class D and class AB operation. Under no circumstances should the recommended maximum powers be exceeded. The de-rating curves in Figure 1 are based on a sinusoidal input signal delivering a maximum output power of 1W into CLASS D P [W] CLASS AB SPKVDD = 5.5V SPKVDD = 5V SPKVDD = 4.2V SPKVDD = 3.6V SPKVDD = 3.3V SPKVDD = 3V SPKVDD = 2.7V

PDF Datasheet Preview

WM9001
1W Dual-Mode Class AB/D Speaker Driver

The WM9001 is a powerful, high quality speaker driver which can operate in class D or AB mode, providing total flexibility to the system designer. Low leakage, high PSRR and pop/click suppression enable direct battery connection to the speaker supply. RF noise suppression techniques and differential design are used to suppress undesired noise. A single-ended input option has been included for complete system flexibility.

The device is enabled by setting a logic '1' on the EN pin. The class D clock can be generated by an internal oscillator, or supplied from an external clock source.

Flexible speaker boost options requiring no additional components allow output volume to be maximised for various SPKVDD/AVDD combinations while minimising internal power consumption.

The WM9001 is available in a 3x3mm QFN package, ideal for portable systems such as mobile phones, portable navigation devices, media players, laptop computers and electronic dictionaries.
• Class D and AB speaker driver modes for flexibility
• Speaker driver provides 1W into at THD
• SNR 102dB Class AB , 97dB Class D
• Differential and single-ended input modes
• >80dB PSRR 217Hz SPKVDD
• <1uA typical leakage with direct battery connection
• Filterless speaker connection
• Fully differential architecture differential mode
• Pop/click suppression
• RF noise suppression
• Fully compatible with Wolfson CODECs
including WM8990 / WM8991
• Internal oscillator or external clock source
• Thermal shutdown protection
• 3x3mm QFN package
• Mobile phones
• Portable navigation devices
• Portable media players
• Laptop computers and portable gaming devices
• Electronic dictionaries
• General-purpose high quality speaker amplifier

BLOCK DIAGRAM

WOLFSON MICROELECTRONICS plc

To receive regular email updates, sign up at

Production Data, March 2010, Rev

Copyright 2010 Wolfson Microelectronics plc

WM9001

TABLE OF CONTENTS

Production Data

APPLICATIONS BLOCK DIAGRAM

TABLE OF CONTENTS
ORDERING INFORMATION

PIN DESCRIPTION

ABSOLUTE MAXIMUM

RECOMMENDED OPERATING CONDITIONS THERMAL PERFORMANCE

POWER DE-RATING

ELECTRICAL CHARACTERISTICS 9

TYPICAL POWER CONSUMPTION

SPEAKER DRIVER PERFORMANCE CLASS D MODE 11 CLASS AB MODE 11

PSRR

EFFICIENCY

AUDIO SIGNAL

DEVICE DESCRIPTION 15 POWER ON RESET 15 ENABLE 15 INPUT SIGNAL 16 SYNC 16 SPEAKER DRIVER MODE 17 SIGNAL BOOST CONTROL 17 THERMAL SHUTDOWN 18 RF NOISE 18 POPS / CLICK SUPPRESSION 18

APPLICATIONS INFORMATION TYPICAL STAND-ALONE 19 TYPICAL USAGE WITH WM8991 CODEC 20 SPEAKER SELECTION 21 PCB LAYOUT 22 RECOMMENDED EXTERNAL 23

PACKAGE DIMENSIONS

IMPORTANT NOTICE 25

Production Data

PIN CONFIGURATION

The WM9001 is supplied in a 3mm x 3mm 16 pin QFN package

WM9001
ORDERING INFORMATION

DEVICE

QFN WM9001GEFL QFN WM9001GEFL/R

MINIMUM ORDER QUANTITY

TEMPERATURE RANGE
-40°C to 85°C
3500
-40°C to 85°C

PACKAGE QFN

MOISTURE SENSITIVITY LEVEL

MSL 1

PEAK SOLDERING TEMPERATURE
260°C

MSL 1
260°C

WM9001 PIN DESCRIPTION

PIN NO 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1

NAME INP_SEL

LIP EN LIN BSEL2 BSEL1 BSEL0 VMID AVDD CDMODE AGND SYNC VOUTN SPKGND SPKVDD VOUTP

TYPE Digital Input Analogue Input

Enable Analogue Input

Digital Input Digital Input Digital Input Analogue Output

Supply Digital In Supply Digital Input Analogue Output Supply Analogue Output

Production Data

DESCRIPTION Audio Input Mode Select Positive differential input

Device Enable input Negative differential input

Signal Boost Control[2] Signal Boost Control[1] Signal Boost Control[0] Midrail voltage decoupling capacitor

Analogue supply Class AB/D Mode select Analogue supply ground

Class D clock input Speaker negative output Speaker driver supply ground

Speaker driver supply Speaker positive output

Production Data

WM9001

ABSOLUTE MAXIMUM RATINGS

Absolute Maximum Ratings are stress ratings only. Permanent damage to the device may be caused by continuously operating at or beyond these limits. Device functional operating limits and guaranteed performance specifications are given under Electrical Characteristics at the test conditions specified.

ESD Sensitive Device. This device is manufactured on a CMOS process. It is therefore generically susceptible to damage from excessive static voltages. Proper ESD precautions must be taken during handling and storage of this device.

Wolfson tests its package types according to IPC/JEDEC J-STD-020B for Moisture Sensitivity to determine acceptable storage conditions prior to surface mount assembly. These levels are:

MSL1 = unlimited floor life at <30°C / 85% Relative Humidity. Not normally stored in moisture barrier bag. MSL2 = out of bag storage for 1 year at <30°C / 60% Relative Humidity. Supplied in moisture barrier bag. MSL3 = out of bag storage for 168 hours at <30°C / 60% Relative Humidity. Supplied in moisture barrier bag.
The Moisture Sensitivity Level for each package type is specified in Ordering Information.

CONDITION AVDD SPKVDD Digital Inputs voltage range Analogue Inputs voltage range Operating temperature range, TA Junction temperature, TJ Storage temperature after soldering

MIN -0.3V -0.3V AGND -0.3V AGND -0.3V -40ºC -40ºC -65ºC

MAX +4.5V +7V AVDD +0.3V AVDD +0.3V +85ºC +150ºC +150ºC

RECOMMENDED OPERATING CONDITIONS

PARAMETER Analogue supply Speaker supply Ground

SYMBOL AVDD

SPKVDD AGND, SPKGND

UNIT

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

All supplies are completely independent from each other i.e. not internally connected .

AVDD must be less than or equal to SPKVDD.

SPKVDD must be high enough to support the peak output voltage when using DCGAIN and ACGAIN functions, to avoid output waveform clipping. Peak output voltage is AVDD* DCGAIN+ACGAIN /2.

The EN and SYNC pins are compatible with low voltage eg. 1.8v logic levels from external devices, and can accept logic 1 digital inputs as low as 1.6V, even though the WM9001 AVDD supply minimum is 2.7V. This provides compatibility with a low voltage DVDD on a controlling device such as the WM8991 CODEC.

WM9001

Production Data

THERMAL PERFORMANCE

Thermal analysis should be performed in the intended application to prevent the WM9001 from exceeding maximum junction temperature. Several contributing factors affect thermal performance most notably the physical properties of the mechanical enclosure, location of the device on the PCB in relation to surrounding components and the number of PCB layers. Connecting the GND pins/paddle through thermal vias and into a large ground plane will aid heat extraction.

Three main heat transfer paths exist to surrounding air:
- Package top to air radiation .
- Package bottom to PCB radiation .
- Package pins/paddle/balls to PCB conduction .

The temperature rise TR is given by TR = PD *
- PD is the power dissipated in the device.
- is the thermal resistance from the junction of the die to the ambient temperature and is therefore a measure of heat transfer from the die to surrounding air. is determined with reference to JEDEC standard JESD51-9.

The junction temperature TJ is given by TJ = TA +TR, where TA is the ambient temperature.

PARAMETER Operating temperature range Operating junction temperature Thermal Resistance

SYMBOL TA TJ

UNIT
°C/W

Production Data

WM9001

POWER DE-RATING

The speaker driver has been designed to drive a maximum of 1W into 8Ω with a 5V supply. However, thermal restrictions defined by the package limit the amount of power that can be safely dissipated in the device without exceeding the maximum operating junction temperature. Power dissipated in the device correlates directly with speaker efficiency, hence there are separate de-rating curves for class D and class AB operation.

Under no circumstances should the recommended maximum powers be exceeded.

The de-rating curves in Figure 1 are based on a sinusoidal input signal delivering a maximum output power of 1W into

CLASS D

P [W]

CLASS AB

SPKVDD = 5.5V SPKVDD = 5V SPKVDD = 4.2V

SPKVDD = 3.6V SPKVDD = 3.3V SPKVDD = 3V SPKVDD = 2.7V

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived WM9001GEFL Datasheet file may be downloaded here without warranties.

Datasheet ID: WM9001GEFL 523286