Datasheet > XWM8731EDS/R

XWM8731EDS/R

更新时间： 2024-11-22 08:27:03

品牌	Logo	应用领域
凌云 - CIRRUS		PC 光电二极管
页数	文件大小	规格书
59页	721K
描述
PCM Codec, 1-Func, CMOS, PDSO28, 10.20 X 5.30 MM, 1.75 MM HEIGHT, MO-150AH, SSOP-28

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中文翻译

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XWM8731EDS/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-Pin SSOP or 28-pin 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-

pin 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

AVDD

CONTROL INTERFACE

WM8731

VMID

HPVDD

HPGND

Bypass

MUTE

AGND

ATTEN/

MUTE

+6 to -73dB

1 dB Steps

Side Tone

H/P

DRIVER

MICBIAS

RLINEIN

VOL/

RHPOUT

MUTE

VOL

MUTE

ADC

MUX

DAC

+12 to -34.5dB, 1.5dB

Steps

ROUT

LOUT

0dB/

20dB

DIGITAL

FILTERS

MICIN

MUTE

MUX

MUTE

VOL

LLINEIN

VOL/

MUTE

H/P

DRIVER

LHPOUT

+12 to -34.5dB, 1.5dB

Steps

Side Tone

+6 to -73dB

1 dB Steps

ATTEN/

MUTE

CLKIN

DIVIDER

CLKOUT

DIVIDER

DIGTAL AUDIO INTERFACE

Bypass

OSC

(Div x1, x2)

Production Data, April 2004, Rev 3.4

WOLFSON MICROELECTRONICS plc

www.wolfsonmicro.com

12 3 4 5 6 7...59

中文翻译

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与XWM8731EDS/R相关器件

型号	品牌	获取价格	描述	数据表
XWM8731EFL	CIRRUS	获取价格	PCM Codec, 1-Func, CMOS, PQCC28, 5 X 5 MM, 0.90 MM HEIGHT, 0.50 MM PITCH, PLASTIC, MO-220-
XWM8731EFL/R	CIRRUS	获取价格	PCM Codec, 1-Func, CMOS, PQCC28, 5 X 5 MM, 0.90 MM HEIGHT, 0.50 MM PITCH, PLASTIC, MO-220-
XWM8733ED	WOLFSON	获取价格	102dB Stereo DAC
XWM8734EDS	WOLFSON	获取价格	Stereo Audio CODEC
XWM8734EDS/R	WOLFSON	获取价格	Stereo Audio CODEC
XWM8734EDS/RV	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
XWM8734EDS/V	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
XWM8739EDS	CIRRUS	获取价格	ADC, Delta-Sigma, 24-Bit, 2 Func, CMOS, PDSO20
XWM8739SEDS/R	CIRRUS	获取价格	ADC, Delta-Sigma, 24-Bit, 2 Func, CMOS, PDSO20
XWM8740EDS	WOLFSON	获取价格	24-bit, High Performance 192kHz Stereo DAC

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