Speaker Driver. WM9082 Datasheet

WM9082 Driver. Datasheet pdf. Equivalent

WM9082 Datasheet
Recommendation WM9082 Datasheet
Part WM9082
Description PDM Input Mono 3W Class D Speaker Driver
Feature WM9082; w WM9082 PDM Input Mono 3W Class D Speaker Driver DESCRIPTION The WM9082 is a high-performance si.
Manufacture Wolfson Microelectronics
Datasheet
Download WM9082 Datasheet




Wolfson Microelectronics WM9082
w
WM9082
PDM Input Mono 3W Class D Speaker Driver
DESCRIPTION
The WM9082 is a high-performance sigma-delta Class D
speaker driver. Audio input is supported using a stereo PDM
interface; clock and control-code detection circuitry supports
all of the audio and control functions via a 2-wire interface.
The digital audio interface provides excellent noise
immunity, eliminating traditional input-filtering components.
The flexible 2-wire interface minimises the PCB footprint and
simplifies software development.
The combined audio and control interface configuration is
ideal for enabling the WM9082 to be located close to the
speaker; this reduces the length of the output connections,
giving good EMC performance and removing the need for
output filter components.
The sigma-delta architecture provides good power efficiency
and improved EMI performance with respect to traditional
PWM Class D designs.
A first-order high-pass filter can be selected on the input
signal to remove DC offsets and help to prevent speaker
damage. Other features include a low-power mute state,
and output slew-rate control.
Short-circuit and thermal protection is provided.
The WM9082 is supplied in a 9-ball 1.56 x 1.46mm CSP
package, with 0.5mm ball pitch.
FEATURES
Sigma-Delta Class-D speaker driver
- 92dB SNR - ‘A’ weighted
- 2.5W into 4(5V supply, 1% THD)
- 1.3W into 4(3.6V supply, 1% THD)
- 1.25W into 8(5V supply, 1% THD)
- 650mW into 8(3.6V supply, 1% THD
Stereo PDM digital audio input
Supports 32kHz, 44.1kHz, 48kHz sample rates (128fs input)
Automatic Left/Right channel selection
First-order high pass filter (HPF)
RF noise suppression
Pop and click suppression
Programmable output slew rates for low EMI
Short-circuit and thermal protection
9-ball CSP package
APPLICATIONS
Mobile Handsets
Portable Media Players (PMP)
Notebooks / Laptop computers
LCD televisions
BLOCK DIAGRAM
WOLFSON MICROELECTRONICS plc
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Production Data, August 2012, Rev 4.1
Copyright 2012 Wolfson Microelectronics plc



Wolfson Microelectronics WM9082
WM9082
Production Data
TABLE OF CONTENTS
DESCRIPTION....................................................................................................... 1 
FEATURES ............................................................................................................ 1 
APPLICATIONS..................................................................................................... 1 
BLOCK DIAGRAM ................................................................................................ 1 
TABLE OF CONTENTS......................................................................................... 2 
PIN CONFIGURATION .......................................................................................... 3 
ORDERING INFORMATION.................................................................................. 3 
PIN DESCRIPTION................................................................................................ 3 
ABSOLUTE MAXIMUM RATINGS ........................................................................ 4 
RECOMMENDED OPERATING CONDITIONS..................................................... 4 
ELECTRICAL CHARACTERISTICS ..................................................................... 5 
TERMINOLOGY ............................................................................................................... 6 
TYPICAL PERFORMANCE ................................................................................... 7 
SIGNAL TIMING REQUIREMENTS ...................................................................... 8 
PDM AUDIO INTERFACE TIMING .................................................................................. 8 
DEVICE DESCRIPTION ........................................................................................ 9 
INTRODUCTION .............................................................................................................. 9 
PDM AUDIO INTERFACE................................................................................................ 9 
DEVICE CONTROL CODES.......................................................................................... 10 
INITIAL POWER-UP.................................................................................................................................. 12 
CONFIGURATION EVENTS ..................................................................................................................... 12 
START-UP EVENTS ................................................................................................................................. 13 
STANDBY EVENTS .................................................................................................................................. 14 
SHUTDOWN EVENTS .............................................................................................................................. 14 
STATE TRANSITION DIAGRAM............................................................................................................... 15 
SPEAKER DRIVER ........................................................................................................ 16 
RESETS AND SHUTDOWN .......................................................................................... 16 
APPLICATIONS INFORMATION ........................................................................ 17 
RECOMMENDED EXTERNAL COMPONENTS ............................................................ 17 
PCB LAYOUT CONSIDERATIONS ............................................................................... 20 
PACKAGE DIMENSIONS.................................................................................... 21 
PACKAGE DIAGRAM FOR DEVICES MARKED LT9 ................................................... 21 
PACKAGE DIAGRAM FOR DEVICES MARKED JC5 ................................................... 22 
IMPORTANT NOTICE ......................................................................................... 23 
ADDRESS: ..................................................................................................................... 23 
REVISION HISTORY ........................................................................................... 24 
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Wolfson Microelectronics WM9082
Production Data
WM9082
PIN CONFIGURATION
The WM9082 is supplied in a 9-ball CSP format. The pin configuration is illustrated below, showing
the top-down view from above the chip.
ORDERING INFORMATION
ORDER CODE
TEMPERATURE RANGE
PACKAGE
WM9082ECSN/R
Note:
Reel quantity = 5,000
-40C to +85C
9-ball CSP
(Pb-free, tape and reel)
MOISTURE
SENSITIVITY LEVEL
MSL1
PEAK SOLDERING
TEMPERATURE
260oC
PIN DESCRIPTION
PIN NO
A1
A2
A3
B1
B2
B3
C1
C2
C3
NAME
SPKOUTP
DNC
GND
SPKVDD
SPKGND
DVDD
SPKOUTN
IN2
IN1
TYPE
Analogue Output
Supply
Supply
Supply
Supply
Analogue Output
Digital Input
Digital Input
DESCRIPTION
Positive BTL speaker output
Do not connect
Ground
Class D output driver supply
Ground
Digital supply
Negative BTL speaker output
PDM input (CLK or Left DATA input)
PDM input (CLK or Right DATA input)
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