Datasheet > WM8775

WM8775

更新时间： 2024-11-22 22:41:27

品牌	Logo	应用领域
欧胜 - WOLFSON		复用器
页数	文件大小	规格书
36页	346K
描述
24 BIT 96 KHZ ADC WITH 4 CHANNEL I/P MULTIPLEXER

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WM8775 数据手册

WM8775

24-bit, 96kHz ADC with 4 Channel I/P Multiplexer

DESCRIPTION

FEATURES

•

Audio Performance

The WM8775 is a high performance, stereo audio ADC

with a 4 channel input mixer. The WM8775 is ideal for

digitising multiple analogue sources for surround sound

processing applications for home hi-fi, automotive and

other audio visual equipment.

−

102dB SNR (‘A’ weighted @ 48kHz)

-90dB THD

•

ADC Sampling Frequency: 32kHz – 96kHz

Four stereo ADC inputs with analogue gain adjust from

+24dB to –21dB in 0.5dB steps

A stereo 24-bit multi-bit sigma delta ADC is used with a

four stereo channel input selector. Each channel has

programmable gain control. Digital audio output word

lengths from 16-32 bits and sampling rates from 32kHz

to 96kHz are supported.

•

Digital gain adjust from -21.5dB to -103dB.

Programmable Automatic Level Control (ALC) or Limiter on

ADC input

•

3-Wire SPI Compatible or 2-wire Serial Control Interface

Master or Slave Clocking Mode

The audio data interface supports I²S, left justified, right

justified and DSP digital audio formats.

Programmable Audio Data Interface Modes

I²S, Left, Right Justified or DSP

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

The interface provides access to all features including

channel selection, volume controls, mutes, de-emphasis

and power management facilities.

−

16/20/24/32 bit Word Lengths

•

2.7V to 5.5V Analogue, 2.7V to 3.6V Digital supply Operation

5V tolerant digital inputs

The device is available in a 28-pin SSOP package. The

WM8775 is software compatible with the WM8776.

APPLICATIONS

•

Surround Sound AV Processors and Hi-Fi systems

Automotive Audio

BLOCK DIAGRAM

WM8775

AINOPL

AINOPR

AINVGL

AINVGR

AIN1L

AIN1R

AUDIO INTERFACE

MCLK

AIN2L

AIN2R

AIN3L

AIN3R

AIN4L

AIN4R

DOUT

STEREO

ADC

ALC

AND

ADCLRC

BCLK

DIGITAL FILTERS

VMID

CONTROL INTERFACE

WOLFSON MICROELECTRONICS plc

Product Preview, June 2004, Rev 1.8

w :: www.wolfsonmicro.com

12 3 4 5 6 7...36

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