WM8993 Wolfson Microelectronics plc, WM8993 Datasheet

WM8993

Manufacturer Part Number

WM8993

Description

Audio Hub Codec For Multimedia Phones

Manufacturer

Wolfson Microelectronics plc

Datasheet

1.WM8993.pdf (4 pages)

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Meier Automation Equipment Co., Limited

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WM8993ECS

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WM8993ECS/RV

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DESCRIPTION

The WM8993 is a highly integrated ultra-low power hi-fi CODEC

designed for portable devices such as multimedia phones.

A stereo 1W/channel speaker driver can operate in class D or

AB mode. Low leakage and high PSRR enable direct battery

connection for the speaker supply.

Class W headphone drivers provide a dramatic reduction in

playback power and are ground-referenced. Active ground loop

noise rejection and DC offset correction help prevent pop noise

and ground noise from degrading headphone output quality.

Powerful mixing capability allows the device to support a huge

range of architectures and use cases. A highly flexible input

configuration supports multiple microphone or line inputs (mono

or stereo, single-ended or differential).

A fully differential internal architecture, active ground noise

rejection and on-chip RF filtering ensure a very high degree of

noise immunity.

ReTune

optimizing speaker characteristics. Programmable dynamic

range control is also available for maximizing loudness,

protecting speakers from clipping and preventing premature

shutdown due to battery droop.

The WM8993 is supplied in very small and thin 48-ball W-CSP

package, ideal for portable systems.

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WOLFSON MICROELECTRONICS plc

Mobile provides powerful parametric equalization for

Audio Hub CODEC for Multimedia Phones

http://www.wolfsonmicro.com/enews

FEATURES

•

APPLICATIONS

•

WM8993 Product Brief

100dB SNR during DAC playback (‘A’ weighted)

Low power, low noise MIC interface

2W mono / 1W stereo class D or AB speaker driver

ReTune

Dynamic range compressor

Low power Class W headphone drivers

Digital audio interface

Low power FLL

2 line outputs (single-ended stereo or differential mono)

Dedicated earpiece driver

“Direct voice” paths to outputs

Active noise reduction

48-ball W-CSP package (3.64x3.54x0.7mm,0.5mm pitch)

Multimedia phones

1W/channel into 8Ω BTL speaker at <1% THD

Integrated charge pump

5mW total power for DAC playback to headphones

All standard data formats and 4-channel TDM supported

All standard sample rates from 8kHz to 48kHz

Provides all necessary internal clocks

32kHz to 27MHz input frequency

Self-clocking mode for class D and charge pump

Low noise paths bypass all internal mixers

Low power consumption

DC offset correction removes pops and clicks

Ground loop noise cancellation

Mobile parametric equalizer

Product Brief, July 2009, Rev 2.0

Related parts for WM8993

WM8993 Summary of contents

Page 1

... Programmable dynamic range control is also available for maximizing loudness, protecting speakers from clipping and preventing premature shutdown due to battery droop. The WM8993 is supplied in very small and thin 48-ball W-CSP package, ideal for portable systems. WOLFSON MICROELECTRONICS plc To receive regular email updates, sign up ...

Page 2

... WM8993 BLOCK DIAGRAM w Product Brief Product Brief, July 2009, Rev 2.0 2 ...

Page 3

... ADC ADC R VOLUME RECORD AUDIO CLOCKS DIGITAL AUDIO FLL INTERFACE MULTIMEDIA PROCESSOR IRQ Tones/Ringtones BASEBAND Rx Voice PROCESSOR Tx Voice WM8993 MOISTURE PEAK SOLDERING TEMPERATURE MSL1 260°C CPVDD CPGND CPVOUTP CPVOUTN Headset / CPFB1 Headphones CHARGE PUMP CPFB2 HPOUT1L HPOUT1R HPOUT1FB HEADPHONE DRIVERS ...

Page 4

... WM8993 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 ...

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