WM8778SEDSSLASHR datasheet(1/50 Pages) WOLFSON

부품명	WM8778SEDS/R

상세설명	24-bit, 192kHz Stereo CODEC

PDF	50 Pages

Scroll/Zoom	100%

제조업체	WOLFSON [Wolfson Microelectronics plc]

홈페이지	http://www.wolfsonmicro.com

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WM8778

24-bit, 192kHz Stereo CODEC

WOLFSON MICROELECTRONICS plc

w :: www.wolfsonmicro.com

Production Data, April 2005, Rev 4.0

Copyright

2005 Wolfson Microelectronics plc

DESCRIPTION

The WM8778 is a high performance, stereo audio

CODEC. It is ideal for surround sound processing

applications for home hi-fi, DVD-RW and other audio

visual equipment.

The stereo 24-bit multi-bit sigma delta ADC has

programmable gain with automatic level control. Digital

audio output word lengths from 16-32 bits and sampling

rates from 32kHz to 96kHz are supported.

A stereo multi-bit sigma delta DAC is used with digital

audio input word lengths from 16-32 bits and sampling

rates from 32kHz to 192kHz. A multiplexor after the DAC

allows the selection of either an external analogue input

or DAC playback into the line outputs.

The WM8778 supports fully independent sample rates

for the ADC and DAC. The audio data interface supports

I

2S, left justified, right justified and DSP formats.

The device is controlled in software via a 2 or 3 wire

serial interface which provides access to all features

including volume controls, mutes, and de-emphasis

facilities. It can also be controlled in hardware which

gives access to the most commonly used features.

Control interface selection is done via the MODE pin (tri-

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

FEATURES

•

Audio Performance

−

108dB SNR (‘A’ weighted @ 48kHz) DAC

−

102dB SNR (‘A’ weighted @ 48kHz) ADC

•

DAC Sampling Frequency: 32kHz – 192kHz

•

ADC Sampling Frequency: 32kHz – 96kHz

•

Stereo ADC input analogue gain adjust from +24dB to –21dB

in 0.5dB steps

•

ADC digital gain from -21.5dB to -103dB in 0.5dB steps

•

Programmable Automatic Level Control (ALC) or Limiter on

ADC input.

•

Stereo DAC with analogue line outputs.

•

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

•

Hardware Control Mode

•

Master or Slave Clocking Mode

•

Programmable Audio Data Interface Modes

−

I

2S, Left, Right Justified or DSP

−

16/20/24/32 bit Word Lengths

•

Analogue Bypass Path Feature

•

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

APPLICATIONS

BLOCK DIAGRAM

•

Surround Sound AV Processors and Hi-Fi systems

•

DVD-RW

유사한 부품 번호 - WM8778SEDS/R

제조업체	부품명	데이터시트	상세설명
Wolfson Microelectronic...	WM8778SEDS/R	498Kb / 50P	24 BIT 192KHZ STEREO CODEC

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WM8778SEDS/R 데이터시트(PDF) 1 Page - Wolfson Microelectronics plc

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