Datasheet > WM8731SEFL/R

WM8731SEFL/R

更新时间： 2024-11-22 12:23:27

品牌	Logo	应用领域
欧胜 - WOLFSON		解码器驱动器编解码器电信集成电路便携式 PC
页数	文件大小	规格书
64页	814K
描述
Portable Internet Audio CODEC with Headphone Driver and Programmable Sample Rates

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WM8731SEFL/R 数据手册

WM8731 / WM8731L

Portable Internet Audio CODEC with Headphone Driver

and Programmable Sample Rates

DESCRIPTION

FEATURES

•

Highly Efficient Headphone Driver

Audio Performance

The WM8731 or WM8731L (WM8731/L) are low power

stereo CODECs with an integrated headphone driver. The

WM8731/L is designed specifically for portable MP3 audio

and speech players and recorders. The WM8731 is also

ideal for MD, CD-RW machines and DAT recorders.

ADC SNR 90dB (‘A’ weighted) at 3.3V, 85dB at 1.8V

DAC SNR 100dB (‘A’ weighted) at 3.3V, 95dB at 1.8V

•

Low Power

Playback only 22mW, 8mW (‘L’ Variant)

Analogue Pass Through 12mW, 3.5mW (‘L’ variant)

1.42 – 3.6V Digital Supply Operation

2.7 – 3.6V Analogue Supply Operation

1.8 – 3.6V Analogue Supply Operation (‘L’ Variant)

Stereo line and mono microphone level audio inputs are

provided, along with a mute function, programmable line

level volume control and a bias voltage output suitable for

an electret type microphone.

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

used with oversampling digital interpolation and decimation

filters. Digital audio input word lengths from 16-32 bits and

sampling rates from 8kHz to 96kHz are supported.

•

ADC and DAC Sampling Frequency: 8kHz – 96kHz

Selectable ADC High Pass Filter

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 outputs are buffered for driving headphones

from a programmable volume control, line level outputs are

also provided along with anti-thump mute and power

up/down circuitry.

•

Microphone Input and Electret Bias with Side Tone Mixer

Available in 28-lead SSOP or 28-lead QFN package

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

The interface provides access to all features including

volume controls, mutes, de-emphasis and extensive power

management facilities. The device is available in a small 28-

lead SSOP package or the smaller 28 lead quad flat

leadless package (QFN).

APPLICATIONS

•

Portable MP3 Players and Recorders

CD and Minidisc Recorders

PDAs / smartphones

BLOCK DIAGRAM

Production Data, April 2009, Rev 4.8

WOLFSON MICROELECTRONICS plc

To receive regular email updates, sign up at http://www.wolfsonmicro.com/enews/

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中文翻译

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与WM8731SEFL/R相关器件

型号	品牌	获取价格	描述	数据表
WM8733	WOLFSON	获取价格	102dB Stereo DAC
WM8734	WOLFSON	获取价格	Stereo Audio CODEC
WM8734	CIRRUS	获取价格	Codec
WM8734_06	WOLFSON	获取价格	Stereo Audio CODEC
WM8734EDS	ETC	获取价格	STEREO AUDIO CODEC
WM8734-EV1M	WOLFSON	获取价格	WM8734 Evaluation Board User Handbook
WM8734SEDS/R	CIRRUS	获取价格	PCM Codec, 1-Func, CMOS, PDSO20, 7.20 X 5.30 MM, 1.75 MM HEIGHT, LEAD FREE, MO-150AE, SSOP
WM8736	WOLFSON	获取价格	24-bit, 96kHz 6-Channel DAC with Volume Control
WM8736EDS	WOLFSON	获取价格	24-bit, 96kHz 6-Channel DAC with Volume Control
WM8737	WOLFSON	获取价格	STEREO ADC WITH MICROPHONE PREAMPLIFIER

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