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WM8955LSEFL PDF预览

WM8955LSEFL

更新时间： 2024-09-17 03:54:39
品牌 Logo 应用领域
欧胜 - WOLFSON 商用集成电路便携式
页数 文件大小 规格书
46页 629K
描述
Stereo DAC For Portable Audio Applications

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中文翻译

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WM8955LSEFL 技术参数

是否Rohs认证： 符合生命周期：Transferred
Reach Compliance Code：unknown风险等级：5.59
Is Samacsys：N湿度敏感等级：1
Base Number Matches：1

WM8955LSEFL 数据手册

 浏览型号WM8955LSEFL的Datasheet PDF文件第2页浏览型号WM8955LSEFL的Datasheet PDF文件第3页浏览型号WM8955LSEFL的Datasheet PDF文件第4页浏览型号WM8955LSEFL的Datasheet PDF文件第5页浏览型号WM8955LSEFL的Datasheet PDF文件第6页浏览型号WM8955LSEFL的Datasheet PDF文件第7页 
WM8955L  
w
Stereo DAC For Portable Audio Applications  
DESCRIPTION  
FEATURES  
•
•
•
DAC SNR 98dB, THD -86dB (‘A’ weighted @ 48kHz, 3.3V)  
On-chip 400mW BTL Speaker Driver (mono)  
On-chip Headphone Driver  
The WM8955L is a low power, high quality stereo DAC with  
integrated headphone and loudspeaker amplifiers, designed to  
reduce external component requirements in portable digital  
audio applications.  
-
-
40mW output power on 16Ω / 3.3V  
SNR 96dB, THD –79dB at 20mW with 16Ω load  
The on-chip headphone amplifiers can deliver 40mW into a 16Ω  
load. Advanced on-chip digital signal processing performs bass  
and treble tone control.  
•
•
•
•
Stereo and Mono Line-in mix into DAC output  
Separately Mixed Stereo and Mono Outputs  
Digital Tone Control and Bass Boost  
Low Power  
The WM8955L can operate as a master or a slave, and  
includes an on-chip PLL. It can use most master clock  
frequencies commonly found in portable systems, including  
USB, GSM, CDMA or PDC clocks, or standard 256fs clock  
rates. Different audio sample rates such as 48kHz, 44.1kHz,  
8kHz and many others are supported.  
-
-
Down to 7mW for stereo playback (1.8V / 1.5V supplies)  
10µW Shutdown Mode  
•
Low Supply Voltages  
-
-
Analogue and Digital I/O: 1.8V to 3.6V  
Digital core: 1.42V to 3.6V  
•
•
•
Master clocks supported: GSM, CDMA, PDC, USB or  
standard audio clocks  
Audio sample rates supported: 8, 11.025, 12, 16, 22.05, 24,  
32, 44.1, 48, 88.2, 96kHz  
The WM8955L operates on supply voltages from 1.8V up to  
3.6V, although the digital core can operate on a separate supply  
down to 1.42V, saving power. Different sections of the chip can  
also be powered down under software control.  
32-lead QFN package, 5x5x0.9mm size, 0.5mm lead pitch  
The WM8955L is supplied in a very small and thin 5x5mm QFN  
package, ideal for use in hand-held and portable systems.  
APPLICATIONS  
•
•
Smartphone / Multimedia Phone  
Digital Audio Player  
BLOCK DIAGRAM  
WOLFSON MICROELECTRONICS plc  
Production Data, March 2006, Rev 4.2  
Copyright 2006 Wolfson Microelectronics plc  
To receive regular email updates, sign up at http://www.wolfsonmicro.com/enews/  
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