Datasheet > WM9082

WM9082

更新时间： 2024-09-18 11:59:19

品牌	Logo	应用领域
欧胜 - WOLFSON		驱动器光电二极管
页数	文件大小	规格书
24页	563K
描述
PDM Input Mono 3W Class D Speaker Driver

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WM9082 数据手册

WM9082

PDM Input Mono 3W Class D Speaker Driver

DESCRIPTION

FEATURES



Sigma-Delta Class-D speaker driver

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.

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

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.



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

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.

Pop and click suppression

Programmable output slew rates for low EMI

Short-circuit and thermal protection

9-ball CSP package

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.

APPLICATIONS



Mobile Handsets

Portable Media Players (PMP)

Notebooks / Laptop computers

LCD televisions

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.

BLOCK DIAGRAM

Production Data, August 2012, Rev 4.1

WOLFSON MICROELECTRONICS plc

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12 3 4 5 6 7...24

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