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參數資料
| 型號： | WM8778 |
| 廠商： | Wolfson Microelectronics |
| 元件分類： | Codec |
| 英文描述： | 24 BIT 192KHZ STEREO CODEC |
| 中文描述： | 24位192kHz立體聲編解碼器 |
| 文件頁數： | 1/50頁 |
| 文件大小： | 498K |
| 代理商： | WM8778 |
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WM8778
24-bit, 192kHz Stereo Codec
WOLFSON MICROELECTRONICS plc
w :: www.wolfsonmicro.com
Product Preview, June 2004, Rev 1.7
Copyright
2004 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
S, 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
2
S, 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
相關PDF資料 |
PDF描述 |
|---|---|
| WM8778EDS | 24 BIT 192KHZ STEREO CODEC |
| WM8802 | Digital Audio Interface Transceiver |
| WM8802SCFT | Digital Audio Interface Transceiver |
| WM8802SCFTV | Digital Audio Interface Transceiver |
| WM8802SCFV | Digital Audio Interface Transceiver |
相關代理商/技術參數 |
參數描述 |
|---|---|
| WM8778_05 | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:24-bit, 192kHz Stereo CODEC |
| WM8778EDS | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:24 BIT 192KHZ STEREO CODEC |
| WM8778EDS/R | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:24 BIT 192KHZ STEREO CODEC |
| WM8778-EV1 | 制造商:Wolfson Microelectronics 功能描述:Evaluation Board for the WM8778 Codec |
| WM8778SEDS | 功能描述:接口—CODEC Stereo CODEC RoHS:否 制造商:Texas Instruments 類型: 分辨率: 轉換速率:48 kSPs 接口類型:I2C ADC 數量:2 DAC 數量:4 工作電源電壓:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:DSBGA-81 封裝:Reel |
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