WM8778 Datasheet – Stereo Audio CODEC

Part Number : WM8778

Function : 24-bit, 192kHz Stereo CODEC

Package : 28-lead SSOP Type

Manufacturers : Wolfson Microelectronics plc

Image :

WM8778 datasheet

 

Description :

The WM8779 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.

Text :
24-bit, 192kHz Stereo CODEC WM8778

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 I2S, 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 (trilevel).

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 − I2S, Left, Right Justified or DSP − 16/20/24/32 bit Word Lengths

• Analogue Bypass Path Feature

• 2.7V to 5.5V Analogue, 2.7V …

Other data sheets within the file :

WM8778SEDS-RV, WM8778SEDS-V

WM8778 Datasheet PDF Download

 

WM8778 pdf

 

ALC662 Datasheet – 5.1-Ch, Audio Codec (Driver)

This is audio codec ic.

Part Number : ALC662

Function : 5.1-Channel High Defintion Audio Codec

Package : 48-pin LQFP type

Manufactures : Realtek

Images :

ALC662 driver audio codec

Description :

ALC662 products are 5.1 Channel High Definition Audio Codecs designed for Windows Vista premium
desktop and mobile PCs. The ALC662, ALC662VC0, and ALC662VC1 meet audio performance and function requirements for the latest Microsoft WLP3.10 (Windows Logo Program). All analog IO (except CD-IN and PCBEEP) are input and output capable, and three headphone amplifiers are also integrated to drive earphones on front (port-E and port-F) and rear panel (port-D). […]

Hardware Features

1. Meets premium audio requirements for Microsoft WLP 3.10 (ALC662 and ALC662-VC series)
2. Meets stricter performance requirements for future WLP (ALC662-VC series)
3. Six-channel DAC supports 16/20/24-bit PCM format for 5.1 channel audio solution
4. Two stereo ADCs support 16/20-bit PCM format
5. All DACs support independent 44.1k/48k/96kHz sample rate
6. All ADCs support independent 44.1k/48k/96kHz sample rate
7. Supports 44.1k/48k/96kHz SPDIF output
8. All analog jack ports are stereo input and output re-tasking

Pinout

ALC662 realtek pinout

Applications

1. Desktop and mobile multimedia PCs
2. Ultra mobile PCs

ALC662 Datasheet