Datasheet > WM8734

WM8734

更新时间： 2024-11-23 17:02:15

品牌	Logo	应用领域
凌云 - CIRRUS		/
页数	文件大小	规格书
45页	448K
描述
Codec

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中文翻译

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WM8734 数据手册

WM8734

Stereo Audio CODEC

DESCRIPTION

FEATURES



Audio Performance

The WM8734 is a low power stereo CODEC ideal for

DVD/RW, MP3, media centre and automotive applications



90dB SNR (‘A’ weighted @ 48kHz) ADC

100dB SNR (‘A’ weighted @ 48kHz) DAC

2.7 – 3.6V Digital Supply Operation

2.7 – 3.6V Analogue Supply Operation

Stereo line inputs are provided, along with a mute function

and programmable line level volume control.

Stereo 24-bit multi-bit sigma delta ADCs and DACs are used

with oversampling digital interpolation and decimation filters.



ADC and DAC Sampling Frequency: 8kHz – 96kHz

Selectable ADC High Pass Filter

Digital audio input word lengths from 16-32 bits and

sampling rates from 8kHz to 96kHz are supported.

2 or 3-Wire MPU Serial Control Interface

Programmable Audio Data Interface Modes



I²S, Left, Right Justified or DSP

16/20/24/32 bit Word Lengths

Master or Slave Clocking Mode

Stereo audio line level outputs are provided along with anti-

thump mute and power up/down circuitry.

The device is controlled via a 2 or 3 wire serial interface.

The interface provides access to all features including level

controls, mutes, de-emphasis and power management



Stereo Audio Inputs and Outputs

20-lead SSOP Package

facilities. The device is available in

package.

a 20-lead SSOP

APPLICATIONS



CD and Minidisc Recorder

MP3 Player / Recorder

BLOCK DIAGRAM

AVDD

VMID

CONTROL INTERFACE

WM8734

AGND

VOL

RLINEIN

MUTE

ADC

DAC

ROUT

LOUT

+12 to -34.5dB,

1.5dB Steps

DIGITAL

FILTERS

VOL

LLINEIN

MUTE

+12 to -34.5dB,

1.5dB Steps

CLKIN

DIVIDER

(Div x1, x2)

DIGTAL AUDIO INTERFACE

WOLFSON MICROELECTRONICS plc

Production Data, August 2013, Rev 4.4

12 3 4 5 6 7...45

中文翻译

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