wm9010 Wolfson Microelectronics plc, wm9010 Datasheet
wm9010
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wm9010 Summary of contents
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... Low Power, Class G Stereo Headphone Driver DESCRIPTION The WM9010 is a low power stereo headphone driver designed for mobile handset and portable media player (PMP) applications. Class G amplifier technology is used to achieve high power efficiency and low quiescent current. Stereo analogue inputs accept 1Vrms line level inputs; the Hi-Fi output drivers deliver up to 28mW into a 32Ω ...
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... WM9010 DESCRIPTION ....................................................................................................... 1 FEATURES............................................................................................................. 1 APPLICATIONS ..................................................................................................... 1 TABLE OF CONTENTS ......................................................................................... 2 PIN CONFIGURATION ........................................................................................... 3 ORDERING INFORMATION .................................................................................. 3 PIN DESCRIPTION ................................................................................................ 3 ABSOLUTE MAXIMUM RATINGS ......................................................................... 4 RECOMMENDED OPERATING CONDITIONS ..................................................... 4 THERMAL PERFORMANCE ................................................................................. 5 ELECTRICAL CHARACTERISTICS ...................................................................... 6 TERMINOLOGY ............................................................................................................. 7 DEVICE DESCRIPTION ......................................................................................... 8 INTRODUCTION ............................................................................................................ 8 HEADPHONE DRIVER .................................................................................................. 8 CHARGE PUMP ............................................................................................................. 9 APPLICATIONS INFORMATION ......................................................................... 10 RECOMMENDED EXTERNAL COMPONENTS ........................................................... 10 PCB LAYOUT CONSIDERATIONS .............................................................................. 10 PACKAGE DIMENSIONS .................................................................................... 11 IMPORTANT NOTICE .......................................................................................... 12 ADDRESS: ...
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... Product Preview PIN CONFIGURATION The WM9010 is supplied in a 12-pin CSP format. The pin configuration is illustrated below, showing the top-down view from above the chip ORDERING INFORMATION ORDER CODE TEMPERATURE RANGE WM9010ECSN/R -40°C to +85°C Note: Reel quantity = 3500 PIN DESCRIPTION ...
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... WM9010 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 therefore generically susceptible to damage from excessive static voltages ...
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... Product Preview THERMAL PERFORMANCE Thermal analysis should be performed in the intended application to prevent the WM9010 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 pin through thermal vias and into a large ground plane will aid heat extraction ...
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... WM9010 ELECTRICAL CHARACTERISTICS Test Conditions VDD = 1.8V, GND = 0V, Load resistance = 16Ω, T PARAMETER SYMBOL Analogue Inputs (INL, INR) Maximum input signal level Input resistance Input capacitance Headphone Output Path (HPOUTL, HPOUTR) Output Power P O Signal to Noise ratio SNR Total Harmonic THD+N Distortion + Noise ...
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... A-weighted filter for noise measurement. Failure to use such a filter will result in higher THD and lower SNR and Dynamic Range readings than are found in the Electrical Characteristics. The low pass filter removes out-of-band noise; although it is not audible, it may affect dynamic specification values. w WM9010 PP, January 2010, Rev 1.0 7 ...
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... VDD supply. The ground-referenced headphone driver design reduces the device power consumption and also eliminates external DC-blocking capacitors on the audio output path. The WM9010 is enabled when a logic high level is detected on ENA. Note that the ENA pin can support digital logic levels up to 2.7V. ...
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... Figure 2 External Connections for HPOUTL and HPOUTR CHARGE PUMP The WM9010 incorporates a charge pump circuit, which generates the supply rails for the headphone output drivers. The charge pump is powered from VDD, and generates split rails CPVOUTP and CPVOUTN. The circuit is adaptive according to the audio signal conditions, supporting the Class G operation and ensuring optimum circuit configuration at all times ...
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... Figure 4 WM9010 Recommended External Components Diagram PCB LAYOUT CONSIDERATIONS Poor PCB layout will degrade the performance and be a contributory factor in EMI, ground bounce and resistive voltage losses. All external components should be placed as close to the WM9010 device as possible, with current loop areas kept as small as possible. w Product Preview PP, January 2010, Rev 1 ...
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... FOLLOWS JEDEC DESIGN GUIDE MO-211-C. w 1.340 0.7mm BODY, 0.50 mm BALL PITCH X X DETAIL CORNER 0. SOLDER BALL DETAIL 2 MAX NOTE 0.725 0.213 0.512 1.860 1.360 3 WM9010 DM078 TOP VIEW DETAIL 1 PP, January 2010, Rev 1.0 11 ...
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... WM9010 IMPORTANT NOTICE Wolfson Microelectronics plc (“Wolfson”) products and services are sold subject to Wolfson’s terms and conditions of sale, delivery and payment supplied at the time of order acknowledgement. Wolfson warrants performance of its products to the specifications in effect at the date of shipment. Wolfson reserves the right to make changes to its products and specifications or to discontinue any product or service without notice ...