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WM8850GEFL/V PDF预览

WM8850GEFL/V

更新时间： 2024-11-09 11:59:15
品牌 Logo 应用领域
欧胜 - WOLFSON 解码器编解码器
页数 文件大小 规格书
223页 1230K
描述
Multi-Channel High Definition Audio CODEC

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中文翻译

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WM8850GEFL/V 数据手册

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WM8850  
w
Multi-Channel High Definition Audio CODEC  
DESCRIPTION  
FEATURES  
Multi-channel High Definition Audio CODEC  
Fully compatible with Intel High Definition Audio Revision 1.0  
6-Channel DAC, 4-channel ADC  
DAC sampling frequency 8kHz - 192kHz  
ADC sampling frequency 8kHz - 96kHz  
DAC Performance:  
The WM8850 is  
a high performance multi-channel audio  
CODEC designed for high performance PC audio systems. The  
device offers full compatibility with the Intel High Definition Audio  
(HDA) specification revision 1.0, allowing seamless integration  
with industry-standard HDA controllers.  
The WM8850 has three high performance stereo DACs to  
enable six channels of high definition audio, ideal for 5.1  
channel applications. A high-performance ground-referenced  
stereo headphone amplifier utilises advanced charge pump and  
DC servo technology to minimise system cost and space without  
compromise on audio quality. Line outputs provide a high-  
quality differential connection to speaker amplifiers, enabling  
common mode noise rejection when these traces are routed  
across a PCB.  
-
-
-
SNR 108 dB (‘A’ weighted)  
SNR 105dB (non weighted)  
THD -96dB (at 0dBFS)  
ADC Performance:  
-
-
-
SNR 105 dB (‘A’ weighted)  
SNR 102dB (non weighted)  
THD -95dB (at -1dBFS)  
Ground-referenced stereo headphone driver  
Differential line inputs/outputs  
Stereo microphone interface with integrated pre-amp  
Multi-channel digital microphone interface  
IEC-60958-3 compatible S/PDIF transceiver  
Additional IEC-60958-3 compatible S/PDIF transmitter  
Jack detect and load impedance sensing  
Beep generator  
GPIO functionality  
IEEE-754 Single precision 32-bit floating point support  
Power supplies  
The WM8850 also has two high performance stereo ADCs to  
provide Hi-Fi quality analogue line-in and microphone input  
digitisation. A low noise microphone bias with programmable  
output voltage is provided. Additionally, the CODEC contains a  
digital microphone interface capable of supporting up to four  
independent digital microphones. One differential stereo input is  
provided for line level signals, while one pseudo-differential  
stereo input with integrated microphone preamplifier is provided.  
The WM8850 also contains a S/PDIF transceiver which is fully  
compatible with IEC-60958-3. The S/PDIF receive and transmit  
paths each contain a sample rate converter (SRC) to enable  
asynchronous sample rate conversion between the S/PDIF  
-
-
-
-
Digital core:  
Digital buffer: 2.97V – 3.63V  
Analogue: 4.5V – 5.25V  
Charge pump: 4.5V – 5.25V  
1.62V – 1.98V  
receive/transmit and HDA interface clock domains.  
An  
48-pin 7mm x 7mm QFN package  
additional S/PDIF transmitter is provided to allow direct output of  
a stereo stream from the HDA interface.  
APPLICATIONS  
The WM8850 is supplied in a small 48-pin QFN package.  
High performance PC audio  
All-in-one desktop PC  
Notebook PC  
Pre Production, April 2011, Rev 3.2  
WOLFSON MICROELECTRONICS plc  
Copyright 2011 Wolfson Microelectronics plc  
1234567...223

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